332354 + Interview Questions in Secondary School in Math

1.	3x upon 4 - 7upon 4equal 5x+12
Answer» $☺️☺️☺️☺️☺️☺️☺️$ $☺hi HEARTIE here☺️$ ➻❥T꙰H꙰A꙰N꙰K꙰Y꙰O꙰U꙰➻❥ ♡ＬＯＶＥＹＯＵＲＳＥＬＦ♡ ❤️❤️ MARK me brainliest❤️❤️ $☺️☺️☺️☺️☺️☺️☺️$

1.

3x upon 4 - 7upon 4equal 5x+12

Answer»

$☺️☺️☺️☺️☺️☺️☺️$

$☺hi HEARTIE here☺️$

➻❥T꙰H꙰A꙰N꙰K꙰Y꙰O꙰U꙰➻❥

♡ＬＯＶＥＹＯＵＲＳＥＬＦ♡

❤️❤️ MARK me brainliest❤️❤️

$☺️☺️☺️☺️☺️☺️☺️$

Discussion

2.	2(x^2 + y^2)^2 = 25 ( x^2 -y^2 )
Answer» Step-by-step EXPLANATION: $(2x {}^{2} - 2y {}^{2} ) {?}^{2} = 25(x {}^{2} - - y {}^{2} ) \\$ is not EQUAL

2.

2(x^2 + y^2)^2 = 25 ( x^2 -y^2 )

Answer»

Step-by-step EXPLANATION:

$(2x {}^{2} - 2y {}^{2} ) {?}^{2} = 25(x {}^{2} - - y {}^{2} ) \\$

is not EQUAL

Discussion

3.	2(x^2 + y^2)^2 = 25 ( x^2 - y^2 )
Answer» ANSWER: THANK you GUYS, you are great ®©©©©©®©©®©©©©©©®®

3.

2(x^2 + y^2)^2 = 25 ( x^2 - y^2 )

Answer»

ANSWER:

THANK you GUYS, you are great

®©©©©©®©©®©©©©©©®®

Discussion

4.	1/3s = 1/5BRUH I DON"T uNdErStAnD
Answer» Answer: /3*s = 1/5 // : 1/3 = 1/5/1/3 s = 3/5 s here is the CORRECT answer please MARK me brainliest and GIVE THANKS

4.

1/3s = 1/5BRUH I DON"T uNdErStAnD

Answer»

Answer:

/3*s = 1/5 // : 1/3

= 1/5/1/3

s = 3/5

s

here is the CORRECT answer please MARK me brainliest and GIVE THANKS

Discussion

5.	Is it possible that the zeroes of a polynomial x^3-5x^2+6x+a+b+c are (a+b+c),(a-b-c) and -2a
Answer» ANSWER: Noo Step-by-step EXPLANATION:

5.

Is it possible that the zeroes of a polynomial x^3-5x^2+6x+a+b+c are (a+b+c),(a-b-c) and -2a

Answer»

ANSWER:

Noo

Step-by-step EXPLANATION:

Discussion

6.	2^(x+2)÷2^(x-1) question on indices
Answer» Answer: 8 Step-by-step EXPLANATION: We KNOW that a^m÷a^n=a^(m-n) So 2^((x+2)-(x-1)) = 2^(x+2-x+1) =2^(3) =8

6.

2^(x+2)÷2^(x-1) question on indices

Answer»

Answer:

8

Step-by-step EXPLANATION:

We KNOW that a^m÷a^n=a^(m-n)

So 2^((x+2)-(x-1))

= 2^(x+2-x+1)

=2^(3)

=8

Discussion

7.	To prove :cos^2 A/(1-tan A)+sin ^3 A/(sinA -cosA)=1+ sin A cos A
Answer» HOPE it HELPS..............

7.

To prove :cos^2 A/(1-tan A)+sin ^3 A/(sinA -cosA)=1+ sin A cos A

Answer»

HOPE it HELPS..............

Discussion

8.	1/3 + s = 1/5 I don't understand this question
Answer» ANSWER: I ALSO do not UNDERSTAND that... HEHEHE

8.

1/3 + s = 1/5 I don't understand this question

Answer»

ANSWER:

I ALSO do not UNDERSTAND that... HEHEHE

Discussion

9.	25600 has how many divisors
Answer» Answer: The NUMBER 25,600 can be divided by 33 POSITIVE DIVISORS (out of which 30 are EVEN, and 3 are odd).

9.

25600 has how many divisors

Answer»

Answer:

The NUMBER 25,600 can be divided by 33 POSITIVE DIVISORS (out of which 30 are EVEN, and 3 are odd).

Discussion

10.	Slove the equation x+3/x=--3x by 3 methods in quadratic equation
Answer» Step-by-step EXPLANATION: =3/x=-4x x^2=-3/4 x=root3i/2

10.

Slove the equation x+3/x=--3x by 3 methods in quadratic equation

Answer»

Step-by-step EXPLANATION:

=3/x=-4x

x^2=-3/4

x=root3i/2

Discussion

11.	Solve the following pair of linear equations by the substitution method,. x-2y=5 and 2x+3y=10
Answer» Answer: here is your FULL solution dude Step-by-step EXPLANATION: now plzz mark as brainilist and follow me yrr at least brainilist to mark KRNA

11.

Solve the following pair of linear equations by the substitution method,. x-2y=5 and 2x+3y=10

Answer»

Answer:

here is your FULL solution dude

Step-by-step EXPLANATION:

now plzz mark as brainilist

and follow me

yrr at least brainilist to mark KRNA

Discussion

12.	Rationalize the denominator of the following.1/3+ V2 - 3\/3
Answer» ANSWER: $\huge\bf\red{Answer}$

12.

Rationalize the denominator of the following.1/3+ V2 - 3\/3

Answer»

ANSWER:

$\huge\bf\red{Answer}$

Discussion

13.	⋇⋆✦⋆⋇　⋇⋆✦⋆⋇　⋇⋆✦⋆⋇　⋇⋆✦⋆⋇　❤❤class 10th ❣❣❣❣❤❤maths chapter 3 ex 3.4❣❣❣❣❣❣❣ thanks##❤❤❣❣❣❣❣❣❣❣❣✧༺♥༻✧✧༺♥༻✧❣❣
Answer» $\tt\Large{\red{Answer:-}}$ $\tt\Large{\red{Explanation:-}}$ $\tt\Large{\orange{Given:-}}$ $\tt\Large{\red{(i)}}$ x + y = 5 … (1) 2x – 3y = 4 … (2) Elimination method: Multiplying equation (1) by 2, we GET equation (3) 2x + 2y = 10 … (3) 2x − 3y = 4 … (2) Subtracting equation (2) from (3), we get 5y = 6⇒ y = 6/5 Putting value of y in (1), we get x + = 5 ⇒ x = 5 − 6/5 = 19/5 THEREFORE, x = 6/5 and y = 19/5 Substitution method: x + y = 5 … (1) 2x − 3y = 4 … (2) From equation (1), we get, x = 5 − y Putting this in equation (2), we get 2 (5 − y) − 3y = 4 ⇒ 10 − 2y − 3y = 4 ⇒ 5y = 6 ⇒ y = 6/5 Putting value of y in (1), we get x = 5 −6/5 = Therefore, x =6/5 and y = 19/5 $\tt\Large{\red{(ii)}}$ 3X + 4y = 10… (1) 2x – 2y = 2… (2) Elimination method: Multiplying equation (2) by 2, we get (3) 4x − 4y = 4 … (3) 3x + 4y = 10 … (1) Adding (3) and (1), we get 7x = 14⇒ x = 2 Putting value of x in (1), we get 3 (2) + 4y = 10 ⇒ 4y = 10 – 6 = 4 ⇒ y = 1 Therefore, x = 2 and y = 1 Substitution method: 3x + 4y = 10… (1) 2x − 2y = 2… (2) From equation (2), we get 2x = 2 + 2y ⇒ x = 1 + y … (3) Putting this in equation (1), we get 3 (1 + y) + 4y = 10 ⇒ 3 + 3y + 4y = 10 ⇒ 7y = 7⇒ y = 1 Putting value of y in (3), we get x = 1 + 1 = 2 Therefore, x = 2 and y = 1 $\tt\Large{\red{(iii)}}$ 3x − 5y – 4 = 0 … (1) 9x = 2y + 7… (2) Elimination method: Multiplying (1) by 3, we get (3) 9x − 15y – 12 = 0… (3) 9x − 2y – 7 = 0… (2) Subtracting (2) from (3), we get −13y – 5 = 0 ⇒ −13y = 5 ⇒ y = -5/13 Putting value of y in (1), we get 3x – 5(-5/13) − 4 = 0 ⇒ 3x = 4 −25/13 = 52 - 25 /13 =27/13 ⇒ x = 27/13 × 3 = 9/ 13 Therefore, x = 9/13 and y = -5/13 Substitution Method: 3x − 5y – 4 = 0 … (1) 9x = 2y + 7… (2) From equation (1), we can SAY that 3x = 4 + 5y⇒ x = 4+5y/ 3 Putting this in equation (2), we get 9 (4+5y/3) − 2y = 7 ⇒ 12 + 15y − 2y = 7 ⇒ 13y = −5 ⇒ y = -5/13 Putting value of y in (1), we get 3x – 5(-5/13) = 4 ⇒ 3x = 4 − = 25/13 = 52-25/13 = 27/13 ⇒ x = 9/13 Therefore, x = 9/13 and y = -5/13 Please mark me as brainlist...✌️❣️

13.

⋇⋆✦⋆⋇　⋇⋆✦⋆⋇　⋇⋆✦⋆⋇　⋇⋆✦⋆⋇　❤❤class 10th ❣❣❣❣❤❤maths chapter 3 ex 3.4❣❣❣❣❣❣❣ thanks##❤❤❣❣❣❣❣❣❣❣❣✧༺♥༻✧✧༺♥༻✧❣❣

Answer»

$\tt\Large{\red{Answer:-}}$

$\tt\Large{\red{Explanation:-}}$

$\tt\Large{\orange{Given:-}}$

$\tt\Large{\red{(i)}}$ x + y = 5 … (1)

2x – 3y = 4 … (2)

Elimination method:

Multiplying equation (1) by 2, we GET equation (3)

2x + 2y = 10 … (3)

2x − 3y = 4 … (2)

Subtracting equation (2) from (3), we get

5y = 6⇒ y = 6/5

Putting value of y in (1), we get

x + = 5

⇒ x = 5 − 6/5 = 19/5

THEREFORE, x = 6/5 and y = 19/5

Substitution method:

x + y = 5 … (1)

2x − 3y = 4 … (2)

From equation (1), we get,

x = 5 − y

Putting this in equation (2), we get

2 (5 − y) − 3y = 4

⇒ 10 − 2y − 3y = 4

⇒ 5y = 6 ⇒ y = 6/5

Putting value of y in (1), we get

x = 5 −6/5 =

Therefore, x =6/5 and y = 19/5

$\tt\Large{\red{(ii)}}$ 3X + 4y = 10… (1)

2x – 2y = 2… (2)

Elimination method:

Multiplying equation (2) by 2, we get (3)

4x − 4y = 4 … (3)

3x + 4y = 10 … (1)

Adding (3) and (1), we get

7x = 14⇒ x = 2

Putting value of x in (1), we get

3 (2) + 4y = 10

⇒ 4y = 10 – 6 = 4

⇒ y = 1

Therefore, x = 2 and y = 1

Substitution method:

3x + 4y = 10… (1)

2x − 2y = 2… (2)

From equation (2), we get

2x = 2 + 2y

⇒ x = 1 + y … (3)

Putting this in equation (1), we get

3 (1 + y) + 4y = 10

⇒ 3 + 3y + 4y = 10

⇒ 7y = 7⇒ y = 1

Putting value of y in (3), we get x = 1 + 1 = 2

Therefore, x = 2 and y = 1

$\tt\Large{\red{(iii)}}$ 3x − 5y – 4 = 0 … (1)

9x = 2y + 7… (2)

Elimination method:

Multiplying (1) by 3, we get (3)

9x − 15y – 12 = 0… (3)

9x − 2y – 7 = 0… (2)

Subtracting (2) from (3), we get

−13y – 5 = 0

⇒ −13y = 5

⇒ y = -5/13

Putting value of y in (1), we get

3x – 5(-5/13) − 4 = 0

⇒ 3x = 4 −25/13 = 52 - 25 /13 =27/13

⇒ x = 27/13 × 3 = 9/ 13

Therefore, x = 9/13 and y = -5/13

Substitution Method:

3x − 5y – 4 = 0 … (1)

9x = 2y + 7… (2)

From equation (1), we can SAY that

3x = 4 + 5y⇒ x = 4+5y/ 3

Putting this in equation (2), we get

9 (4+5y/3) − 2y = 7

⇒ 12 + 15y − 2y = 7

⇒ 13y = −5 ⇒ y = -5/13

Putting value of y in (1), we get

3x – 5(-5/13) = 4

⇒ 3x = 4 − = 25/13 = 52-25/13 = 27/13

⇒ x = 9/13

Therefore, x = 9/13 and y = -5/13

Please mark me as brainlist...✌️❣️

Discussion

14.	some of the ages of 2 friends is 20 yrs .4 yrs ago the product of their ages is 48.if so possible then determine their present age
Answer» Answer: No real solutions Step-by-step explanation: MAKE a table for this problem (SEE attachments). Lets say one friend has an AGE of x Than the other friend has an age of 20-x (the SUM of their ages is 20). This was 4 years ago (we subtract 4) Unfortunately, this has no solutions

14.

some of the ages of 2 friends is 20 yrs .4 yrs ago the product of their ages is 48.if so possible then determine their present age

Answer»

Answer:

No real solutions

Step-by-step explanation:

MAKE a table for this problem (SEE attachments).

Lets say one friend has an AGE of x
Than the other friend has an age of 20-x (the SUM of their ages is 20).
This was 4 years ago (we subtract 4)
Unfortunately, this has no solutions

Discussion

15.	Solution of the math.
Answer» ANSWER: ... .. . . . . . . . . RATIO will be 2:1

15.

Solution of the math.

Answer»

ANSWER:

...

..

.

RATIO will be 2:1

Discussion

16.	'cot Q 2and find all the t-ratius
Answer» ALL THE T - TATIUNS They are as FOLLOWS: COSECANT or cosecθ= Hypotenuse/Perpendicular= Hypotenuse/Opposite. SECANT or secθ = Hypotenuse/Base =Hypotenuse/ Adjacent. COTANGENT or cotθ= Base/Perpendicular= Adjacent/Opposite. HOPE IT HELPS YOU

16.

'cot Q 2and find all the t-ratius

Answer»

ALL THE T - TATIUNS

They are as FOLLOWS: COSECANT or cosecθ= Hypotenuse/Perpendicular= Hypotenuse/Opposite. SECANT or secθ = Hypotenuse/Base =Hypotenuse/ Adjacent. COTANGENT or cotθ= Base/Perpendicular= Adjacent/Opposite.

HOPE IT HELPS YOU

Discussion

17.	At what percent will Rs 6000 amount to Rs 7500 in 4 years? Give log2= 0.0313 Antilog (0.02423)= 1.05701
Answer» ANSWER: EK Eduydd74f the FOUR GOO

17.

At what percent will Rs 6000 amount to Rs 7500 in 4 years? Give log2= 0.0313 Antilog (0.02423)= 1.05701

Answer»

ANSWER:

EK Eduydd74f the FOUR GOO

Discussion

18.	At what percent will Rs 6000 amount to Rs 7500 in 4 years? give log2=0.0313 antilog(0.02423) = 1.05701.
Answer» Answer: 6.25% ROI Step-by-step EXPLANATION: Capital=6000 Amount=7500 so, The interest the person got=1500 The person got 1500 interest in 4 YEAR so , in 1 year he'll get=1500/4=375₹ He got 375₹ interest on 6000₹ in 1 yr so, RATE Of Interest= (375/6000)×100 =6.25%

18.

At what percent will Rs 6000 amount to Rs 7500 in 4 years? give log2=0.0313 antilog(0.02423) = 1.05701.

Answer»

Answer:

6.25% ROI

Step-by-step EXPLANATION:

Capital=6000

Amount=7500

so, The interest the person got=1500

The person got 1500 interest in 4 YEAR

so , in 1 year he'll get=1500/4=375₹

He got 375₹ interest on 6000₹ in 1 yr

so, RATE Of Interest= (375/6000)×100

=6.25%

Discussion

19.	If x+1/x=17/4 then find the value of x
Answer» Answer: X+1/x=17/4 [cross MULTIPLICATION] 17(x)=4(x+1) 17x = 4x +4 17x-4x=4 13x=4 x=13/4

19.

If x+1/x=17/4 then find the value of x

Answer»

Answer:

X+1/x=17/4

[cross MULTIPLICATION]

17(x)=4(x+1)

17x = 4x +4

17x-4x=4

13x=4

x=13/4

Discussion

20.	Draw the graph of x square - 12 x + 32 and find the roots of the equation
Answer» Step-by-step explanation: a detective is TRYING to find some CLUES about the inheritance of a missing child.cell from which of the following body parts must he GET to proceed with the investigation? brain,HEART and muscle are the above cell

20.

Draw the graph of x square - 12 x + 32 and find the roots of the equation

Answer»

Step-by-step explanation:

a detective is TRYING to find some CLUES about the inheritance of a missing child.cell from which of the following body parts must he GET to proceed with the investigation?

brain,HEART and muscle are the above cell

Discussion

21.	Product of zeroes of 5xsquare -1
Answer» Step-by-step explanation: We have , f (x ) = 5 x^2 -1 For its zeros , f ( x) = 0 → 5x^2 - 1 = 0 → x ^2 = 1/5 → x= ±1/√5 Hence , REQUIRED zeros are 1/√5 and -1/√5 . Now , PRODUCT of zeros = (-1/√5)(1/√5) = -1/5 Or , there is an alternative method Product of zero s of a quadratic equation = c/a = -1/5 Please MARK it as brainliest and follow me .........

21.

Product of zeroes of 5xsquare -1

Answer»

Step-by-step explanation:

We have ,

f (x ) = 5 x^2 -1

For its zeros ,

f ( x) = 0

→ 5x^2 - 1 = 0

→ x ^2 = 1/5

→ x= ±1/√5

Hence , REQUIRED zeros are 1/√5 and -1/√5 .

Now , PRODUCT of zeros = (-1/√5)(1/√5)

= -1/5

Or , there is an alternative method

Product of zero s of a quadratic equation = c/a = -1/5

Please MARK it as brainliest and follow me .........

Discussion

22.	If x = asec + btan 0 and y = a tan + bsec , prove that(x² - y²) = (a - b).
Answer» Step-by-step explanation: We have , x^2 = a ^2 sec ^2 theta + B^2 tan^2 theta + 2xy sec theta • tan theta y ^2 = a ^2 tan^2 theta + b ^2 sec ^2 theta + 2 xy sec theta tan theta Now , x^2 - y^2 = a^2( sec ^2 theta - tan ^2 theta ) + b^2( sec^2 theta - tan ^2 theta) = a^2 - b^2 , SINCE sec ^2 theta - tan ^2 theta = 1 PLEASE follow me and mark it as BRAINLIEST

22.

If x = asec + btan 0 and y = a tan + bsec , prove that(x² - y²) = (a - b).

Answer»

Step-by-step explanation:

We have ,

x^2 = a ^2 sec ^2 theta + B^2 tan^2 theta + 2xy sec theta • tan theta

y ^2 = a ^2 tan^2 theta + b ^2 sec ^2 theta + 2 xy sec theta tan theta

Now , x^2 - y^2 = a^2( sec ^2 theta - tan ^2 theta ) + b^2( sec^2 theta - tan ^2 theta)

= a^2 - b^2 , SINCE sec ^2 theta - tan ^2 theta = 1

PLEASE follow me and mark it as BRAINLIEST

Discussion

23.	3/5 divided by 2 1/2=?
Answer» $\implies \frac{3}{5} ÷ 2\frac{1}{2}$ $\implies \frac{3}{5} ÷ \frac{5}{2}$ $\implies \frac{3}{5} × \frac{2}{5}$ $\implies \frac{15}{10}$ $\implies \frac{3}{2}$

23.

3/5 divided by 2 1/2=?

Answer»

$\implies \frac{3}{5} ÷ 2\frac{1}{2}$

$\implies \frac{3}{5} ÷ \frac{5}{2}$

$\implies \frac{3}{5} × \frac{2}{5}$

$\implies \frac{15}{10}$

$\implies \frac{3}{2}$

Discussion

24.	Find three rational no. B/w (a-b)^1 and (a^1 - b^1) a=1/6 and b=1/8
Answer» Step-by-step explanation: a detective is trying to find some CLUES about the INHERITANCE of a missing child.cell from which of the FOLLOWING body parts must he get to PROCEED with the in. dhshj

24.

Find three rational no. B/w (a-b)^1 and (a^1 - b^1) a=1/6 and b=1/8

Answer»

Step-by-step explanation:

a detective is trying to find some CLUES about the INHERITANCE of a missing child.cell from which of the FOLLOWING body parts must he get to PROCEED with the in. dhshj

Discussion

25.	Ahhhh i need help im not sureeeee
Answer» Step-by-step explanation: We have , AB / AC = 1/2 → (3 x -4)/(2x +12) = 1/2 → 3x - 4 = x +6 → 3x - x = 10 → 2x = 10/2= 5 Now , AC = 2x + 12 = 2(5) + 12= 22 BC = 7(x ) -2 = 7(5) - 2= 33 Now , we have AC / BC = 22/33 = 2/3 Hence , proved Please mark it as BRAINLIEST and follow me please

25.

Ahhhh i need help im not sureeeee

Answer»

Step-by-step explanation:

We have ,

AB / AC = 1/2

→ (3 x -4)/(2x +12) = 1/2

→ 3x - 4 = x +6

→ 3x - x = 10

→ 2x = 10/2= 5

Now ,

AC = 2x + 12 = 2(5) + 12= 22

BC = 7(x ) -2 = 7(5) - 2= 33

Now , we have

AC / BC = 22/33 = 2/3

Hence , proved

Please mark it as BRAINLIEST and follow me please

Discussion

26.	junaid and ashish can do a piece of work in 12 days, Ashish and ali in 15 days, Junaid and ali in 20 days.in how many days will they finish it together ?
Answer» Answer: JUNAID +ASHISH (i) ASHISH + ALI (ii) JUNAID + ALI (III) Step-by-step explanation: Use the concept of time and work. All necessary concepts I had EXPLAINED in picture.

26.

junaid and ashish can do a piece of work in 12 days, Ashish and ali in 15 days, Junaid and ali in 20 days.in how many days will they finish it together ?

Answer»

Answer:

JUNAID +ASHISH (i)

ASHISH + ALI (ii)

JUNAID + ALI (III)

Step-by-step explanation:

Use the concept of time and work.

All necessary concepts I had EXPLAINED in picture.

Discussion

27.	9 Un coche viaja a 90 km/h, y recorre cierta distancia en 3,5 h. Calcula el tiempo que tardaria en reco-rrer esa misma distancia si viajara a 120 km/h.
Answer» Given : Un coche viaja a 90 km/h, y recorre cierta distancia en 3,5 h. To find : Calcula el tiempo que tardaria en recorrer esa misma distancia si viajara a 120 km/h. Solution: A car travels at 90 km / h, and travels a certain distance in 3.5 h. Calculate the time it would take to run that same distance if you were traveling at 120 km / h. car travels at 90 km / h Speed = 90 km/h Time = 3.5 h Distance = Speed * Time => Distance = 90 * 3.5 = 315 km Now Speed = 120 km/h Time = 315 / 120 = 2.625 hr = 2 hr 37 minutes 30 sec viajes en automóvil a 90 km / h Velocidad = 90 km / h. Tiempo = 3.5 h Distancia = Velocidad * Tiempo => Distancia = 90 * 3.5 = 315 km Ahora velocidad = 120 km / h Tiempo = 315/120 = 2.625 h = 2 h 37 minutos 30 seg. Learn more: A car is MOVING at the average speed of 60 km per HOUR how much ... brainly.in/question/7816695 By INCREASING the speed of car by 10km/hr , the time of journey for a ... brainly.in/question/3684266

27.

9 Un coche viaja a 90 km/h, y recorre cierta distancia en 3,5 h. Calcula el tiempo que tardaria en reco-rrer esa misma distancia si viajara a 120 km/h.

Answer»

Given : Un coche viaja a 90 km/h, y recorre cierta distancia en 3,5 h.

To find : Calcula el tiempo que tardaria en recorrer esa misma distancia si viajara a 120 km/h.

Solution:

A car travels at 90 km / h, and travels a certain distance in 3.5 h.

Calculate the time it would take to run that same distance if you were traveling at 120 km / h.

car travels at 90 km / h

Speed = 90 km/h

Time = 3.5 h

Distance = Speed * Time

=> Distance = 90 * 3.5 = 315 km

Now Speed = 120 km/h

Time = 315 / 120 = 2.625 hr = 2 hr 37 minutes 30 sec

viajes en automóvil a 90 km / h

Velocidad = 90 km / h.

Tiempo = 3.5 h

Distancia = Velocidad * Tiempo

=> Distancia = 90 * 3.5 = 315 km

Ahora velocidad = 120 km / h

Tiempo = 315/120 = 2.625 h = 2 h 37 minutos 30 seg.

Learn more:

A car is MOVING at the average speed of 60 km per HOUR how much ...

brainly.in/question/7816695

By INCREASING the speed of car by 10km/hr , the time of journey for a ...

brainly.in/question/3684266

Discussion

28.	What must be subtracted from -12x to make 45x
Answer» ANSWER: Step-by-step EXPLANATION:

28.

What must be subtracted from -12x to make 45x

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

29.	El importe de la factura de la energía eléctrica de una familia en dos meses asciende a 90 €correspondiente a un consumo de 720 kW/h.a) ¿Cuál es el precio de 1 kW/h de energía eléctrica?b) Si el consumo se mantiene constante, ¿cuánto pagará esta familia en un año?c) ¿Qué importe tendría la factura si en 2 meses se han consumido 900 kW/h?
Answer» Is it any indian language?... (you should signed to another ACCN and mention that place where UH LIVE)

Discussion

30.	While exploring a volcano, Zane heard some rumbling, so he decided to climb up out of there as quickly as he could. Zane's elevation relative to the edge of the inside of the volcano (in meters) as a function of time (in seconds) is graphed. graph How high did Zane climb every 777 seconds? Choose 1 answer: Choose 1 answer: (Choice A) A \dfrac75 5 7 start fraction, 7, divided by, 5, end fraction meters (Choice B) B 555 meters (Choice C) C 777 meters (Choice D) D \dfrac57 7 5 start fraction, 5, divided by, 7, end fraction meters
Answer» ANSWER: PLEASE FOLLOW me and HOPE you LIKE it

30.

While exploring a volcano, Zane heard some rumbling, so he decided to climb up out of there as quickly as he could. Zane's elevation relative to the edge of the inside of the volcano (in meters) as a function of time (in seconds) is graphed. graph How high did Zane climb every 777 seconds? Choose 1 answer: Choose 1 answer: (Choice A) A \dfrac75 5 7 start fraction, 7, divided by, 5, end fraction meters (Choice B) B 555 meters (Choice C) C 777 meters (Choice D) D \dfrac57 7 5 start fraction, 5, divided by, 7, end fraction meters

Answer»

ANSWER:

PLEASE FOLLOW me and HOPE you LIKE it

Discussion

31.	El importe de la factura de la energía eléctrica de una familia en dos meses asciende a 90 €correspondiente a un consumo de 720 kW/h.
Answer» ANSWER: not ABLE to UNDERSTAND the QUESTION

31.

El importe de la factura de la energía eléctrica de una familia en dos meses asciende a 90 €correspondiente a un consumo de 720 kW/h.

Answer»

ANSWER:

not ABLE to UNDERSTAND the QUESTION

Discussion

32.	If x = 2sina / 1+cosa+3sina , then find the value of sina-3cosa+3 / 2-2cosa
Answer» Step-by-step EXPLANATION: If X = 2SINA / 1+cosa+3sina , then FIND the VALUE of sina-3cosa+3 / 2-2cosaIf x = 2sina / 1+cosa+3sina , then find the value of sina-3cosa+3 / 2-2cosaIf x = 2sina / 1+cosa+3sina , then find the value of sina-3cosa+3 / 2-2cosa

32.

If x = 2sina / 1+cosa+3sina , then find the value of sina-3cosa+3 / 2-2cosa

Answer»

Step-by-step EXPLANATION:

If X = 2SINA / 1+cosa+3sina , then FIND the VALUE of sina-3cosa+3 / 2-2cosaIf x = 2sina / 1+cosa+3sina , then find the value of sina-3cosa+3 / 2-2cosaIf x = 2sina / 1+cosa+3sina , then find the value of sina-3cosa+3 / 2-2cosa

Discussion

33.	Please explain the answer with proper written steps.
Answer» ANSWER: (2). LENGTH of Δ is 5/9 ; (1). X - 1 Step-by-step EXPLANATION:

33.

Please explain the answer with proper written steps.

Answer»

ANSWER:

(2). LENGTH of Δ is 5/9 ; (1). X - 1

Step-by-step EXPLANATION:

Discussion

34.	Need help on the question
Answer» Answer: OPTION B Step-by-step explanation: PLEASE check the ATTACHED IMAGE.

34.

Need help on the question

Answer»

Answer:

OPTION B

Step-by-step explanation:

PLEASE check the ATTACHED IMAGE.

Discussion

35.	suppose the sum of the seven positive numbers is 21.what is the minimum possible value of the average of the square of these numbers?
Answer» Step-by-step explanation: a+b+C+d+e+f+G = 21 for a²,b²,c²,d²,e²,f²,g² AM ≥ GM ( a² + b² + c² + d² + e² + f² + g² ) / 7 ≥ (a²b²c²d²e²f²g² ) ^ (1/7) ( a² + b² + c² + d² + e² + f² + g² ) / 7 ≥ [ (abcdefg ) ^ (1/7) ]² For abcdefg AM ≥ GM ( a + b + c + d + e + f + g ) / 7 ≥ (abcdefg)^(1/7) 3 ≥ (abcdefg)^1/7 ( a² + b² + c² + d² + e² + f² + g² ) ≥ 7 * [ (abcdefg ) ^ (1/7) ]² hence minimum possible VALUE for it is 7 * [ (abcdefg ) ^ (1/7) ]² but since MAXIMUM value possible for (abcdefg)^1/7 is 3 we put it 3 in 7 * [ (abcdefg ) ^ (1/7) ]² 7 * 3² 7*9 63 is your ANSWER please mark as brainliest answer

35.

suppose the sum of the seven positive numbers is 21.what is the minimum possible value of the average of the square of these numbers?

Answer»

Step-by-step explanation:

a+b+C+d+e+f+G = 21

for a²,b²,c²,d²,e²,f²,g²

AM ≥ GM

( a² + b² + c² + d² + e² + f² + g² ) / 7 ≥ (a²b²c²d²e²f²g² ) ^ (1/7)

( a² + b² + c² + d² + e² + f² + g² ) / 7 ≥ [ (abcdefg ) ^ (1/7) ]²

For abcdefg

AM ≥ GM

( a + b + c + d + e + f + g ) / 7 ≥ (abcdefg)^(1/7)

3 ≥ (abcdefg)^1/7

( a² + b² + c² + d² + e² + f² + g² ) ≥ 7 * [ (abcdefg ) ^ (1/7) ]²

hence minimum possible VALUE for it is 7 * [ (abcdefg ) ^ (1/7) ]²

but since MAXIMUM value possible for (abcdefg)^1/7 is 3

we put it 3 in 7 * [ (abcdefg ) ^ (1/7) ]²

7 * 3²

7*9

63 is your ANSWER

please mark as brainliest answer

Discussion

36.	How you get 3×4==12 what Upper number 9=90 8= 72 6=56 6=42 3=?
Answer» Step-by-step explanation: 9= 90 => 9×(9+1)= 9×10 8= 72 => 8×(8+1)=8×9 6=42=> 6×(6+1)=6×7 hence 3= 12=> 3×(3+1) = 3×4 thus we GET 3×4=12 hope this HELPS you

36.

How you get 3×4==12 what Upper number 9=90 8= 72 6=56 6=42 3=?

Answer»

Step-by-step explanation:

9= 90 => 9×(9+1)= 9×10

8= 72 => 8×(8+1)=8×9

6=42=> 6×(6+1)=6×7

hence

3= 12=> 3×(3+1) = 3×4

thus we GET 3×4=12

hope this HELPS you

Discussion

37.	Five cans of drink cost 32p 41p 27p 35p and 30p whats the means cost
Answer» Step-by-step EXPLANATION: five cans of drink cost 32p , 41p, 27p, 35P, 30p mean= SUM of observations /NUMBER of observations = 32p+41p+27p+35p+30p/5 = 165p / 5 = 33

37.

Five cans of drink cost 32p 41p 27p 35p and 30p whats the means cost

Answer»

Step-by-step EXPLANATION:

five cans of drink cost 32p , 41p, 27p, 35P, 30p

mean= SUM of observations /NUMBER of observations

= 32p+41p+27p+35p+30p/5

= 165p / 5

= 33

Discussion

38.	Whats means cost in maths
Answer» Total COST = Fixed Cost + Variable Cost Step-by-step explanation: Total Cost = Fixed Cost + Variable Cost Fixed Cost is the Cost that will incur even if no production/manufacturing Variable Cost - Cost Which vary with Produce Quantity A cost function is a mathematical formula for finding production EXPENSES for different production levels Total cost of production given a specific quantity produced. Like RENT is Fixed cost as need to be paid even if no production being done Raw material Cost is variable cost as raw material will be used as per produced Quantity only Per part assembly cost is also Variable Cost Learn More: The revenue function for a product is r =600q 0.5q2 and the cost ... brainly.in/question/10321657 Reshmi family booked Banquet Hall at NEW Delhi bus charges RS ... brainly.in/question/14101143

38.

Whats means cost in maths

Answer»

Total COST = Fixed Cost + Variable Cost

Step-by-step explanation:

Total Cost = Fixed Cost + Variable Cost

Fixed Cost is the Cost that will incur even if no production/manufacturing

Variable Cost - Cost Which vary with Produce Quantity

A cost function is a mathematical formula for finding

production EXPENSES for different production levels

Total cost of production given a specific quantity produced.

Like RENT is Fixed cost as need to be paid even if no production being done

Raw material Cost is variable cost as raw material will be used as per produced Quantity only

Per part assembly cost is also Variable Cost

Learn More:

The revenue function for a product is r =600q 0.5q2 and the cost ...

brainly.in/question/10321657

Reshmi family booked Banquet Hall at NEW Delhi bus charges RS ...

brainly.in/question/14101143

Discussion

39.	Find out the rule behind the formation of the sequence 1, 4.9, 16... a) Write next three terms b) What is the tenth term of this sequence c) Is 900 a term of this sequence? If it is ,what is its position? d) Is 1000 a term of this sequence?
Answer» Answer: it is a SEQUENCE of PERFECT squares a.25, 36, 49 b. 100 c.yes, 30th term d. no, else u will get a DECIMAL, which is 31.6227766016 Step-by-step EXPLANATION:

39.

Find out the rule behind the formation of the sequence 1, 4.9, 16... a) Write next three terms b) What is the tenth term of this sequence c) Is 900 a term of this sequence? If it is ,what is its position? d) Is 1000 a term of this sequence?

Answer»

Answer: it is a SEQUENCE of PERFECT squares

a.25, 36, 49

b. 100

c.yes, 30th term

d. no, else u will get a DECIMAL, which is 31.6227766016

Step-by-step EXPLANATION:

Discussion

40.	Effect of the degree of indeterminacy on stability of the structure.
Answer» Answer: Internal static indeterminacy: It refers to the geometric STABILITY of the structure. If after knowing the external REACTIONS it is not POSSIBLE to determine all internal forces/internal reactions using static equilibrium equations ALONE then the structure is said to be internally indeterminate I hope you like it Stay home and stay SAFE

40.

Effect of the degree of indeterminacy on stability of the structure.

Answer»

Answer:

Internal static indeterminacy: It refers to the geometric STABILITY of the structure. If after knowing the external REACTIONS it is not POSSIBLE to determine all internal forces/internal reactions using static equilibrium equations ALONE then the structure is said to be internally indeterminate

I hope you like it

Stay home and stay SAFE

Discussion

41.	Effect of the deformations (displacements and rotations of joints) on straining actions / internal forces (bending moment, shear force and normal force) for statically indeterminate structure
Answer» Step-by-step explanation: STATICALLY indeterminate structures occur more frequently in practice than those that are statically determinate and are generally more economical in that they are stiffer and STRONGER. ... HOWEVER, the failure of a member in, SAY, a statically determinate truss would lead, almost certainly, to a rapid COLLAPSE.

41.

Effect of the deformations (displacements and rotations of joints) on straining actions / internal forces (bending moment, shear force and normal force) for statically indeterminate structure

Answer»

Step-by-step explanation:

STATICALLY indeterminate structures occur more frequently in practice than those that are statically determinate and are generally more economical in that they are stiffer and STRONGER. ... HOWEVER, the failure of a member in, SAY, a statically determinate truss would lead, almost certainly, to a rapid COLLAPSE.

Discussion

42.	X^4dy+dx+x^3y= - sec(xy)
Answer» ANSWER: =dx4y+x3y+dx Step-by-step EXPLANATION: LET's SIMPLIFY step-by-step. x4dy+dx+x3y =dx4y+dx+x3y

42.

X^4dy+dx+x^3y= - sec(xy)

Answer»

ANSWER:

=dx4y+x3y+dx

Step-by-step EXPLANATION:

LET's SIMPLIFY step-by-step.

x4dy+dx+x3y

=dx4y+dx+x3y

Discussion

43.	How do you find the missing side of a triangle?
Answer» Hii Side is 3KM HOPE it will HELP you

43.

How do you find the missing side of a triangle?

Answer»

Hii

Side is 3KM

HOPE it will HELP you

Discussion

44.	Given parallelogram ABCD, m\angle A=4x+27m ∠ A = 4 x + 27, and m\angle C=6x-23m ∠ C = 6 x − 23, find m\angle Bm ∠ B
Answer» ANSWER: it is TOUGH QUESTION not SOON colectvely

44.

Given parallelogram ABCD, m\angle A=4x+27m ∠ A = 4 x + 27, and m\angle C=6x-23m ∠ C = 6 x − 23, find m\angle Bm ∠ B

Answer»

ANSWER:

it is TOUGH QUESTION not SOON colectvely

Discussion

45.	What are the leading coefficient and degree of the polynomial? 18−23v3−v−2v5
Answer» Step-by-step EXPLANATION: leading TERM ↑ given polynomial= 18-23v^3-V-2v^5 ↓. ↓ leading. degree coefficient. of polynomial leading coefficient = coefficient of heigher POWER of v = -2 degree of the polynomial = 5 hope this helps you very clearly

45.

What are the leading coefficient and degree of the polynomial? 18−23v3−v−2v5

Answer»

Step-by-step EXPLANATION:

leading TERM

↑

given polynomial= 18-23v^3-V-2v^5

↓. ↓

leading. degree

coefficient. of

polynomial

leading coefficient = coefficient of heigher POWER of v = -2

degree of the polynomial = 5

hope this helps you

very clearly

Discussion

46.	For each of these three equations, determine whether there are any solution(s). If there are solutions, say what they are and show how you found them. If there aren't solutions, explain why not.(a) $\textcolor{white}.~~\frac x3+\frac x4+\frac x5 ~=~ \frac{2x}3 + \frac{2x}4 + \frac{2x}5$(b) $\textcolor{white}.~~\frac y3+\frac y4+\frac y5 ~=~ \frac y3+\frac y4+\frac y5+1$(c) $\textcolor{white}.~~\frac z3+\frac z4+\frac z5 ~=~ \frac z4+\frac z5+\frac z6+1$
Answer» ANSWER: fzfjzgxmchlfhghjljp

46.

For each of these three equations, determine whether there are any solution(s). If there are solutions, say what they are and show how you found them. If there aren't solutions, explain why not.(a) $\textcolor{white}.~~\frac x3+\frac x4+\frac x5 ~=~ \frac{2x}3 + \frac{2x}4 + \frac{2x}5$(b) $\textcolor{white}.~~\frac y3+\frac y4+\frac y5 ~=~ \frac y3+\frac y4+\frac y5+1$(c) $\textcolor{white}.~~\frac z3+\frac z4+\frac z5 ~=~ \frac z4+\frac z5+\frac z6+1$

Answer»

ANSWER:

fzfjzgxmchlfhghjljp

Discussion

47.	What is the simplest form of 3.5:2.5
Answer» Answer: 3.5/2.5 =3510/2510 =350/250 =35/25 =7/5 simplest FORM is 7/5

47.

What is the simplest form of 3.5:2.5

Answer»

Answer:

3.5/2.5

=35*10/25*10

=350/250

=35/25

=7/5

simplest FORM is 7/5

Discussion

48.	A box was 3/4 full.the box fell on the floor. 30 marbles fell out. this was 20% of the marbles that were in the box. how many marbles are in a full box
Answer» Answer: 200 Step-by-step explanation: let number of marbles be x in a FULL BOX. according to the question 20%of 3x/4 = 30 => 60x/400 = 30 => 6x = 30×40 => x= 30×40 / 6 => x = 200 therefore total number of marbles in a full box = 200 hope this helps you

48.

A box was 3/4 full.the box fell on the floor. 30 marbles fell out. this was 20% of the marbles that were in the box. how many marbles are in a full box

Answer»

Answer:

200

Step-by-step explanation:

let number of marbles be x in a FULL BOX.

according to the question

20%of 3x/4 = 30

=> 60x/400 = 30

=> 6x = 30×40

=> x= 30×40 / 6

=> x = 200

therefore total number of marbles in a full box

= 200

hope this helps you

Discussion

49.	If alpha and beta are the zeroes of √2x^2+3x+√2 then find the value of alpha + beta + alpha×beta
Answer» $\dfrac{( - <klux>3</klux>+\sqrt{2}) \sqrt{2}}{2}$ Step-by-step explanation: Given: Alpha and Beta are the zeroes of given equation. To FIND: Alpha + Beta + Alpha × Beta Solution: COMPARING the equation √2x² + 3x + √2 from ax² + bx + c, I GET, a = √2, b = 3 and c = √2 We know that, $\text{Sum of roots} = -\frac{b}{a} \\ \\ i.e \: \: \: \alpha + \beta = -\frac{3}{ \sqrt{2} }$ $\text{Product of roots} = \frac{c}{a} \\ \\ i.e \: \: \: \alpha \beta = \frac{ \sqrt{2} }{ \sqrt{2} } \\ \\ = 1$ Now, $\alpha + \beta + \alpha \beta \\ \\ - \frac{3}{ \sqrt{2} } + 1 \\\\\\[\text{Rationalizing the denominator}] \\ \frac{ - 3 + \sqrt{2} }{ \sqrt{2} } \\ \\ \frac{( - 3 + \sqrt{2}) \sqrt{2}}{2}$ REQUIRED answer is $\boxed{\blue{\dfrac{( - 3 + \sqrt{2}) \sqrt{2}}{2}}}$

49.

If alpha and beta are the zeroes of √2x^2+3x+√2 then find the value of alpha + beta + alpha×beta

Answer»

$\dfrac{( - <klux>3</klux>+\sqrt{2}) \sqrt{2}}{2}$

Step-by-step explanation:

Given:

Alpha and Beta are the zeroes of given equation.

To FIND:

Alpha + Beta + Alpha × Beta

Solution:

COMPARING the equation √2x² + 3x + √2 from ax² + bx + c, I GET,

a = √2, b = 3 and c = √2

We know that,

$\text{Sum of roots} = -\frac{b}{a} \\ \\ i.e \: \: \: \alpha + \beta = -\frac{3}{ \sqrt{2} }$

$\text{Product of roots} = \frac{c}{a} \\ \\ i.e \: \: \: \alpha \beta = \frac{ \sqrt{2} }{ \sqrt{2} } \\ \\ = 1$

Now,

$\alpha + \beta + \alpha \beta \\ \\ - \frac{3}{ \sqrt{2} } + 1 \\\\\\[\text{Rationalizing the denominator}] \\ \frac{ - 3 + \sqrt{2} }{ \sqrt{2} } \\ \\ \frac{( - 3 + \sqrt{2}) \sqrt{2}}{2}$

REQUIRED answer is $\boxed{\blue{\dfrac{( - 3 + \sqrt{2}) \sqrt{2}}{2}}}$

Discussion

50.	two wires of 2 ohms and 3 ohms respectively are connected in parallel. Find their resultant resistance
Answer» 1.2 Step-by-step explanation: Given: R1 = 2 ohm R2 = 3 ohm They are connected in parallel. To find: The resultant resistance Solution: We know that, when resistance are connected in parallel the resultant resistance is less than the given resistance. Formula $\boxed{ \red{\frac{1}{R_1} + \frac{1}{R_2} = \frac{1}{R_r}} } \\ \\ \frac{1}{2} + \frac{1}{3} =\frac{1}{R_r}\\ \\ \frac{3+2}{6}=\frac{1}{R_r} \\ \\ \frac{5}{6} = \frac{1}{R_r} \\ \\ {R_r} = \frac{6}{5} = 1.2 \: \: \:$ Therefore, The required resultant resistance is 1.2 ohm Extra Information: Resistance: Resistance is a physical quantity of CONDUCTORS and semiconductors which interrupts in passing of ELECTRICITY through the conductor or semiconductor. Resistance DEPEND directly with length of conductor and indirectly with the area of cross section.

50.

two wires of 2 ohms and 3 ohms respectively are connected in parallel. Find their resultant resistance

Answer»

1.2

Step-by-step explanation:

Given:

R1 = 2 ohm

R2 = 3 ohm

They are connected in parallel.

To find:

The resultant resistance

Solution:

We know that, when resistance are connected in parallel the resultant resistance is less than the given resistance.

Formula

$\boxed{ \red{\frac{1}{R_1} + \frac{1}{R_2} = \frac{1}{R_r}} } \\ \\ \frac{1}{2} + \frac{1}{3} =\frac{1}{R_r}\\ \\ \frac{3+2}{6}=\frac{1}{R_r} \\ \\ \frac{5}{6} = \frac{1}{R_r} \\ \\ {R_r} = \frac{6}{5} = 1.2 \: \: \:$

Therefore, The required resultant resistance is 1.2 ohm

Extra Information:

Resistance: Resistance is a physical quantity of CONDUCTORS and semiconductors which interrupts in passing of ELECTRICITY through the conductor or semiconductor.

Resistance DEPEND directly with length of conductor and indirectly with the area of cross section.

Discussion

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please mark as brainliest answer

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hope this HELPS you

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hope this helps you

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Slove the equation x+3/x=--3x by 3 methods in quadratic equation

Rationalize the denominator of the following.1/3+ V2 - 3\/3

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some of the ages of 2 friends is 20 yrs .4 yrs ago the product of their ages is 48.if so possible then determine their present age

'cot Q 2and find all the t-ratius

At what percent will Rs 6000 amount to Rs 7500 in 4 years? Give log2= 0.0313 Antilog (0.02423)= 1.05701

At what percent will Rs 6000 amount to Rs 7500 in 4 years? give log2=0.0313 antilog(0.02423) = 1.05701.

If x+1/x=17/4 then find the value of x

Draw the graph of x square - 12 x + 32 and find the roots of the equation

Product of zeroes of 5xsquare -1

If x = asec + btan 0 and y = a tan + bsec , prove that(x² - y²) = (a - b).

junaid and ashish can do a piece of work in 12 days, Ashish and ali in 15 days, Junaid and ali in 20 days.in how many days will they finish it together ?

9 Un coche viaja a 90 km/h, y recorre cierta distancia en 3,5 h. Calcula el tiempo que tardaria en reco-rrer esa misma distancia si viajara a 120 km/h.

El importe de la factura de la energía eléctrica de una familia en dos meses asciende a 90 €correspondiente a un consumo de 720 kW/h.

suppose the sum of the seven positive numbers is 21.what is the minimum possible value of the average of the square of these numbers?

Find out the rule behind the formation of the sequence 1, 4.9, 16... a) Write next three terms b) What is the tenth term of this sequence c) Is 900 a term of this sequence? If it is ,what is its position? d) Is 1000 a term of this sequence?

If alpha and beta are the zeroes of √2x^2+3x+√2 then find the value of alpha + beta + alpha×beta

two wires of 2 ohms and 3 ohms respectively are connected in parallel. Find their resultant resistance