332354 + Interview Questions in Secondary School in Math

1.	Activity 5Date :Complete the following activity, to write thequadratic equation y = 2y - 7 in the standard formto get the values of a, b, c. (standard form) (?)( a) ? (b) (?) (c) (?)
Answer» ANSWER: first WRITE LIKE this 2y-7= y y-2y+7=0 this is standard form

1.

Activity 5Date :Complete the following activity, to write thequadratic equation y = 2y - 7 in the standard formto get the values of a, b, c. (standard form) (?)( a) ? (b) (?) (c) (?)

Answer»

ANSWER:

first WRITE LIKE this

2y-7= y

y-2y+7=0

this is standard form

Discussion

2.	If a polynomial p(x)=x²+12x+27 is divisible by (x+a) then find the value of a..
Answer» <P>ANSWER: p(X)=x^2+12x+27 x+a=0 x= -a p(-a)=(-a)^2+12(a)+27=0 p(-a)=a+12a+27=0 p(-a)=13a+27=0 13a=-27 a= -27/13 a= -2.07

2.

If a polynomial p(x)=x²+12x+27 is divisible by (x+a) then find the value of a..

Answer»

<P>ANSWER:

p(X)=x^2+12x+27

x+a=0

x= -a

p(-a)=(-a)^2+12(a)+27=0

p(-a)=a+12a+27=0

p(-a)=13a+27=0

13a=-27

a= -27/13

a= -2.07

Discussion

3.	Represent number line 5+7
Answer» Answer: 12..............................

3.

Represent number line 5+7

Answer»

Answer:

12..............................

Discussion

4.	А2:7 four. 74th of 일 a number is 5 more than three fowethof the number. &find the number.
Answer» ANSWER: 안녕 what is your NAME?? Step-by-step EXPLANATION: 半くらいかなちゃん

4.

А2:7 four. 74th of 일 a number is 5 more than three fowethof the number. &find the number.

Answer»

ANSWER:

안녕 what is your NAME??

Step-by-step EXPLANATION:

半くらいかなちゃん

Discussion

5.	10 - Зу – 1 = 1pls answer I will mark brainliest pls
Answer» ANSWER: I hope Step-by-step explanation: 10-3y-1=1 9-3y=1 9-1=3y 8=3y y=8/3

5.

10 - Зу – 1 = 1pls answer I will mark brainliest pls

Answer»

ANSWER:

I hope

Step-by-step explanation:

10-3y-1=1

9-3y=1

9-1=3y

8=3y

y=8/3

Discussion

6.	The lengths of the diagonals of a parallelogram are 10√3 cm and 10√2 cm. If one side of the parallelogram is 13 cm, find the perimeter of the parallelogram.
Answer» Split the PARALLELOGRAM into 2 triangles (See ATTACHMENT) FIND the area of one triangle: Perimeter = 11 + 13 + 20 = 44 cm Semi-Perimeter = 44 ÷ 2 = 22 cm Area = √p(p - a)(p - b) (p - c) Area = √22(22 - 11)(22 - 13)(22 - 20) Area = √4356 Area = 66 cm² Find the area of the parallelogram: parallelogram = 2 x area of triangle Area = 66 x 2 = 132 cm² Find the other diagonal: Let the other diagonal be x 1/2 (diagonal 1 x diagonal 2) = Area 1/2 (20x) = 132 10x = 132 x = 13.2 cm Answer: The other diagonal is 13.2 cm

6.

The lengths of the diagonals of a parallelogram are 10√3 cm and 10√2 cm. If one side of the parallelogram is 13 cm, find the perimeter of the parallelogram.

Answer»

Split the PARALLELOGRAM into 2 triangles (See ATTACHMENT)

FIND the area of one triangle:

Perimeter = 11 + 13 + 20 = 44 cm

Semi-Perimeter = 44 ÷ 2 = 22 cm

Area = √p(p - a)(p - b) (p - c)

Area = √22(22 - 11)(22 - 13)(22 - 20)

Area = √4356

Area = 66 cm²

Find the area of the parallelogram:

parallelogram = 2 x area of triangle

Area = 66 x 2 = 132 cm²

Find the other diagonal:

Let the other diagonal be x

1/2 (diagonal 1 x diagonal 2) = Area

1/2 (20x) = 132

10x = 132

x = 13.2 cm

Answer: The other diagonal is 13.2 cm

Discussion

7.	Laxmi's father is 49 years old . He is 4 years older than three times laxmi's age . What is laxmi's age?
Answer» Step-by-step explanation: lakshmi's father =49 YEARS years older than three times than laxmi's AGE=4 Let, Laxmi's age be X years ∴ Laxmi's father's age =4+3x A.T.Q, 49=4+3x ⟹3x=49−4 ⟹x= 3 45 =15 ∴ Laxmi is 15 years old.

7.

Laxmi's father is 49 years old . He is 4 years older than three times laxmi's age . What is laxmi's age?

Answer»

Step-by-step explanation:

lakshmi's father =49 YEARS

years older than three times than laxmi's AGE=4

Let, Laxmi's age be X years

∴ Laxmi's father's age =4+3x

A.T.Q,

49=4+3x

⟹3x=49−4

⟹x=

3

45

=15

∴ Laxmi is 15 years old.

Discussion

8.	Find x in the Q. below:-6(x-2/3)=5/6+4x
Answer» ANSWER: x=29/12 Step-by-step EXPLANATION: PLEASE MARK me BRAINEST

8.

Find x in the Q. below:-6(x-2/3)=5/6+4x

Answer»

ANSWER:

x=29/12

Step-by-step EXPLANATION:

PLEASE MARK me BRAINEST

Discussion

9.	PLEASE HELP THANK YOU !!
Answer» ANSWER: so here we GO, Step-by-step explanation: (1.5*100/5)cm =150/5 =30pieces I hope it helps U plz MARK my ANS as brainliest have a good day

9.

PLEASE HELP THANK YOU !!

Answer»

ANSWER:

so here we GO,

Step-by-step explanation:

(1.5*100/5)cm

=150/5

=30pieces

I hope it helps U

plz MARK my ANS as brainliest

have a good day

Discussion

10.	As age is twice B's ; 4 years ago a was three times as old as B. find their ages ?
Answer» PLZ STATE it CLEARLY . Step-by-step EXPLANATION: then I can ANSWER

10.

As age is twice B's ; 4 years ago a was three times as old as B. find their ages ?

Answer»

PLZ STATE it CLEARLY .

Step-by-step EXPLANATION:

then I can ANSWER

Discussion

11.	State true or false 2x-5=0 stands for x=2/5
Answer» False 2x-5=0 2x=5 x=5/2

11.

State true or false 2x-5=0 stands for x=2/5

Answer»

False

2x-5=0

2x=5

x=5/2

Discussion

12.	(-6)×(13) please help me with the explanation
Answer» (-6)×(13) =-78 Good AFTERNOON

12.

(-6)×(13) please help me with the explanation

Answer»

(-6)×(13)

=-78

Good AFTERNOON

Discussion

13.	Solve for x- 16/x − 15/x+1 = 1
Answer» ANSWER: $x \: - \frac{16}{x} - \frac{15}{x} + 1 = 1 \\ \frac{16}{x} - \frac{15}{x} = - 1 + 1 + x \\ \frac{16x - 15x}{x} = x \\ \frac{1x}{x} = x \\ 1 = x$

13.

Solve for x- 16/x − 15/x+1 = 1

Answer»

ANSWER:

$x \: - \frac{16}{x} - \frac{15}{x} + 1 = 1 \\ \frac{16}{x} - \frac{15}{x} = - 1 + 1 + x \\ \frac{16x - 15x}{x} = x \\ \frac{1x}{x} = x \\ 1 = x$

Discussion

14.	Properties of Division of Rational Numbers
Answer» Properties of Rational Numbers The major properties of rational numbers are: Closure Property Commutativity Property Associative Property Distributive Property Let us now study these properties in detail. Step-by-step explanation: Addition of Rational Numbers The closure property states that for any two rational numbers a and b, a + b is also a rational number. The result is a rational number. So we say that rational numbers are closed under addition. 2) Subtraction of Rational Numbers The closure property states that for any two rational numbers a and b, a – b is also a rational number. The result is a rational number. So the rational numbers are closed under subtraction. 3) MULTIPLICATION of Rational Numbers The closure property states that for any two rational numbers a and b, a × b is also a rational number. The result is a rational number. So rational numbers are closed under multiplication. 4) Division of Rational Numbers The closure property states that for any two rational numbers a and b, a ÷ b is also a rational number. The result is a rational number. But we know that any rational number a, a ÷ 0 is not defined. So rational numbers are not closed under division. But if we exclude 0, then all the rational numbers are closed under division. Commutative Property 1. Addition For any two rational numbers a and b, a + b = b+ a We see that the two rational numbers can be added in any order. So addition is commutative for rational numbers. 2. Subtraction For any two rational numbers a and b, a – b ≠ b – So subtraction is not commutative for ratioanl numbers. 3. Multiplication For any two rational numbers a and b, a × b = b × a We see that the two ratrional numbers can be multiplied in any order. So multiplication is commutative for ratioanl numbers. 4. Division For any two rational numbers a and b, a ÷ b ≠ b We see that the expressions on both the sides are not equal. So divsion is not commutative for ratioanal numbers. Associative Property Take any three rational numbers a, b and c. Firstly add a and b and then add c to the SUM. (a + b) + c. Now again add b and c and then a to the sum, a + (b + c). Is (a + b) + c and a + (b + c) same? Yes and this is how associative property works. It states that you can add or multiply numbers regardless of how they are grouped Addition and multiplication are associative for rational numbers. Subtraction and division are not associative for rational numbers. Distributive Property Distributive property states that for any three numbers x, y and Z we have x × ( y + z ) = (x × y) +( x × z) PLEASE make BRAINLIEST answer please

14.

Properties of Division of Rational Numbers

Answer»

Properties of Rational Numbers

The major properties of rational numbers are:

Closure Property

Commutativity Property

Associative Property

Distributive Property

Let us now study these properties in detail.

Step-by-step explanation:

Addition of Rational Numbers

The closure property states that for any two rational numbers a and b, a + b is also a rational number.

The result is a rational number. So we say that rational numbers are closed under addition.

2) Subtraction of Rational Numbers

The closure property states that for any two rational numbers a and b, a – b is also a rational number.

The result is a rational number. So the rational numbers are closed under subtraction.

3) MULTIPLICATION of Rational Numbers

The closure property states that for any two rational numbers a and b, a × b is also a rational number.

The result is a rational number. So rational numbers are closed under multiplication.

4) Division of Rational Numbers

The closure property states that for any two rational numbers a and b, a ÷ b is also a rational number.

The result is a rational number. But we know that any rational number a, a ÷ 0 is not defined. So rational numbers are not closed under division. But if we exclude 0, then all the rational numbers are closed under division.

Commutative Property

1. Addition

For any two rational numbers a and b, a + b = b+ a

We see that the two rational numbers can be added in any order. So addition is commutative for rational numbers.

2. Subtraction

For any two rational numbers a and b, a – b ≠ b –

So subtraction is not commutative for ratioanl numbers.

3. Multiplication

For any two rational numbers a and b, a × b = b × a

We see that the two ratrional numbers can be multiplied in any order. So multiplication is commutative for ratioanl numbers.

4. Division

For any two rational numbers a and b, a ÷ b ≠ b

We see that the expressions on both the sides are not equal. So divsion is not commutative for ratioanal numbers.

Associative Property

Take any three rational numbers a, b and c. Firstly add a and b and then add c to the SUM. (a + b) + c. Now again add b and c and then a to the sum, a + (b + c). Is (a + b) + c and a + (b + c) same? Yes and this is how associative property works. It states that you can add or multiply numbers regardless of how they are grouped

Addition and multiplication are associative for rational numbers.

Subtraction and division are not associative for rational numbers.

Distributive Property

Distributive property states that for any three numbers x, y and Z we have

x × ( y + z ) = (x × y) +( x × z)

PLEASE make BRAINLIEST answer please

Discussion

15.	(b-a/2) ^2 expansion
Answer» ANSWER: b^2 + ( a^2 ) / 4 - ab Step-by-step EXPLANATION: use (x-y)^2 FORMULA

15.

(b-a/2) ^2 expansion

Answer»

ANSWER:

b^2 + ( a^2 ) / 4 - ab

Step-by-step EXPLANATION:

use (x-y)^2 FORMULA

Discussion

16.	10. Multiplicative inverse of 2 is.
Answer» Answer: 1/2 Step-by-step explanation: *HOPE* *this* *HELPS* *you* If so please MARK it as BRAINLIEST (◠‿◕)

16.

10. Multiplicative inverse of 2 is.

Answer»

Answer:

1/2

Step-by-step explanation:

HOPE this HELPS you

If so please MARK it as BRAINLIEST (◠‿◕)

Discussion

17.	Ion: 6*If If u = x log xy where x + y + 3xy = 1 then find
Answer» Step-by-step EXPLANATION: HD rhrifjnnu xyfh fhxb. uxjd hxufbtifjf FHH duhrbdhjbbdhrhbrbhhbdhd hdbrurhbrbr

17.

Ion: 6*If If u = x log xy where x + y + 3xy = 1 then find

Answer»

Step-by-step EXPLANATION:

HD rhrifjnnu xyfh fhxb. uxjd hxufbtifjf FHH duhrbdhjbbdhrhbrbhhbdhd hdbrurhbrbr

Discussion

18.	पीएच = 6 1 सी पावर 4 प्लस 7 एक्स क्यूब प्लस 26 एक्स स्क्वेयर - 25 11025 में से क्या घटाया जाए कि प्रणामी भोपाजी एक्स बराबर 3 एक्स स्क्वायर माइनस एक्स प्लस 4 से विभाजित हो जाए
Answer» ANSWER: dhrivtjrbrubdifufhtudn

18.

पीएच = 6 1 सी पावर 4 प्लस 7 एक्स क्यूब प्लस 26 एक्स स्क्वेयर - 25 11025 में से क्या घटाया जाए कि प्रणामी भोपाजी एक्स बराबर 3 एक्स स्क्वायर माइनस एक्स प्लस 4 से विभाजित हो जाए

Answer»

ANSWER:

dhrivtjrbrubdifufhtudn

Discussion

19.	How to calculate present value of investment yield in perpetuity
Answer» Answer: PV = C / (r – g) PV = Present value. C = Amount of CONTINUOUS CASH PAYMENT. r = Interest rate or yield. Perpetuity is a perpetual annuity, it is a series of EQUAL infinite cash flows that occur at the end of each period and there is equal interval of time between the cash flows. Present value of a perpetuity equals the periodic cash flow divided by the interest rate.....Mark Brainlist Selected my Question...The present value of a perpetuity has an INVERSE relationship to the discount rate you use to value it. If we were to value this bond at a 4% discount rate, the present value would jump to $12,500 (PV = $500 ÷ 0.04). If we valued it with a 10% discount rate, the present value would fall to $5,000 (PV = $500 ÷ 0.10)

19.

How to calculate present value of investment yield in perpetuity

Answer»

Answer:

PV = C / (r – g)

PV = Present value. C = Amount of CONTINUOUS CASH PAYMENT. r = Interest rate or yield.

Perpetuity is a perpetual annuity, it is a series of EQUAL infinite cash flows that occur at the end of each period and there is equal interval of time between the cash flows. Present value of a perpetuity equals the periodic cash flow divided by the interest rate.....Mark Brainlist Selected my Question...The present value of a perpetuity has an INVERSE relationship to the discount rate you use to value it. If we were to value this bond at a 4% discount rate, the present value would jump to $12,500 (PV = $500 ÷ 0.04). If we valued it with a 10% discount rate, the present value would fall to $5,000 (PV = $500 ÷ 0.10)

Discussion

20.	Anaivarukkum nanri ennai follow seiyavum
Answer» ANSWER: which LANGUAGE and this DEAR PLEASE TELL

20.

Anaivarukkum nanri ennai follow seiyavum

Answer»

ANSWER:

which LANGUAGE and this DEAR PLEASE TELL

Discussion

21.	To be 15.7 + 0.2 kg and 27.3 + 0.3 kg.The masses of two bodies are measuredWhat is the total mass of the two and theSolve nurerror in it?[Ans : 43 kg, = 0.5 kg)
Answer» TOTAL MASS = 15.7 +27.3= 43 kg error = 0.2 + 0.3= 0.5kg

21.

To be 15.7 + 0.2 kg and 27.3 + 0.3 kg.The masses of two bodies are measuredWhat is the total mass of the two and theSolve nurerror in it?[Ans : 43 kg, = 0.5 kg)

Answer»

TOTAL MASS = 15.7 +27.3= 43 kg

error = 0.2 + 0.3= 0.5kg

Discussion

22.	6.Using pattern 22 = 4 , find 20002202 = 400
Answer» ANSWER: so SORRY IM not your answer so I'm not SURE your answer

22.

6.Using pattern 22 = 4 , find 20002202 = 400

Answer»

ANSWER:

so SORRY IM not your answer so I'm not SURE your answer

Discussion

23.	10. माचिस की एक डिब्बी के पेंदे का क्षेत्रफल 10 वर्ग सेमी है तथा इसकी ऊँचाई 1.5 सेमी है। ऐसी दो दर्जनडिब्बियों का रखने के लिए एक पैकिट का आयतन ज्ञात कीजिए।Answer 10 डिब्बी के पेंदे का क्षेत्रफल =10^2 cm^2ऊँचाई = 1.5 cmडिब्बियों का आयतन बराबर क्षेत्रफल * ऊंचाई =101.5=15cm^3दो दर्जन डिब्बीयों क्षेत्रफल = 2415 = 360 cm^3
Answer»

Discussion

24.	Using prime factorisation method,find l.c.m of 75 and 120
Answer» Answer: Find the LCM of 30,75 and 120 by prime FACTORIZATION method. 30=2×3×5,75=3×52. 120=2×2×2×3×5=23×3×5. LCM=23×3×52=600. Step-by-step explanation: #SofiRizz...❤

24.

Using prime factorisation method,find l.c.m of 75 and 120

Answer»

Answer:

Find the LCM of 30,75 and

120 by prime FACTORIZATION method.

30=2×3×5,75=3×52.

120=2×2×2×3×5=23×3×5.

LCM=23×3×52=600.

Step-by-step explanation:

#SofiRizz...❤

Discussion

25.	Tn=a+(n-1) complete the formula
Answer» ANSWER: DONT GIVE INCOMPLETE QUESTIONS

25.

Tn=a+(n-1) complete the formula

Answer»

ANSWER:

DONT GIVE INCOMPLETE QUESTIONS

Discussion

26.	What least number must be added to 6252 to get a number which is exactly divisible by 14وطمه بصصديمي هوا (کیget which is excatly divisible by 14
Answer» Answer: 6 is the least no. which is added to get no. 6258 which is exactly divisible by 14. Step-by-step EXPLANATION: by dividing 6252 by 14 we get REMINDER 8. then 14 - 8= 6 . 6 should be added to 6252 then it is exactly divisible by 14.

26.

What least number must be added to 6252 to get a number which is exactly divisible by 14وطمه بصصديمي هوا (کیget which is excatly divisible by 14

Answer»

Answer:

6 is the least no. which is added to get no. 6258 which is exactly divisible by 14.

Step-by-step EXPLANATION:

by dividing 6252 by 14 we get REMINDER 8.

then 14 - 8= 6 . 6 should be added to 6252

then it is exactly divisible by 14.

Discussion

27.	What is the momentum of a body of mass of 200gram with a velocity of 15meter per second
Answer» <P>As we know the formula of MOMENTUM is MV So, MASS (m) = 200 g i.e 0.2 kg velocity (v) = 15m/s Momentum (p) = mv = 0.2×15 = 3 kgm/s Hope it helps you. ....... if it does then please mark me as brainliest........

27.

What is the momentum of a body of mass of 200gram with a velocity of 15meter per second

Answer»

<P>As we know the formula of MOMENTUM is MV

So, MASS (m) = 200 g i.e 0.2 kg

velocity (v) = 15m/s

Momentum (p) = mv = 0.2×15 = 3 kgm/s

Hope it helps you. ....... if it does then please mark me as brainliest........

Discussion

28.	Match the sequence written in general form in column A with the corresponding first three term in column B answer and formula
Answer» Answer: Directions Match the sequence written in general form in COLUMN A with the from ... form in Column A with the corresponding first three terms in Column B. COLUMN A COLUMN B ... Directions: Identify the ERROR and replace it with the correct answer. 1. FIND the 7 TH TERM of the sequence defined by the equation a n = 7 – 5n.

28.

Match the sequence written in general form in column A with the corresponding first three term in column B answer and formula

Answer»

Answer:

Directions Match the sequence written in general form in COLUMN A with the from ... form in Column A with the corresponding first three terms in Column B. COLUMN A COLUMN B ... Directions: Identify the ERROR and replace it with the correct answer. 1. FIND the 7 TH TERM of the sequence defined by the equation a n = 7 – 5n.

Discussion

29.	Check if 20 cm,25 cm,15 cm are sides of a right-angled triangle or not
Answer» ANSWER: YES, these all are the SIDES of a TRIANGLE

29.

Check if 20 cm,25 cm,15 cm are sides of a right-angled triangle or not

Answer»

ANSWER:

YES, these all are the SIDES of a TRIANGLE

Discussion

30.	The length of the hypotenuse of a right angled triangle is 20 cm. Find the length of median of its hypotenuse. 102040
Answer» Answer: 10 CM PLEASE MARK me as BRAINLIEST

30.

The length of the hypotenuse of a right angled triangle is 20 cm. Find the length of median of its hypotenuse. 102040

Answer»

Answer:

10 CM

PLEASE MARK me as BRAINLIEST

Discussion

31.	How can the ANOVA applied to only two group?
Answer» ANSWER: dont Step-by-step EXPLANATION: know thanks for free POINTS

31.

How can the ANOVA applied to only two group?

Answer»

ANSWER:

dont

Step-by-step EXPLANATION:

know

thanks for

free POINTS

Discussion

32.	Find the addition of largest number of yourdigits and largest number of there digte
Answer» ANSWER: You???? MEANING.... Step-by-step EXPLANATION: TELL me....

32.

Find the addition of largest number of yourdigits and largest number of there digte

Answer»

ANSWER:

*You*???? MEANING....

Step-by-step EXPLANATION:

TELL me....

Discussion

33.	A and B are cylindrical containers. If 3/4th of the water in container B would fill container A to its brim, what is the ratio of the radius of container A to container B?
Answer» Answer: see below Step-by-step explanation: PRESSURE inside a fluid = ρgh , in this case ρ = 1000 KG m 3 so , 1000 = (1000)(10) (h) hence h = 0.1 m = 10 cm hence OPTION (A) is correct

33.

A and B are cylindrical containers. If 3/4th of the water in container B would fill container A to its brim, what is the ratio of the radius of container A to container B?

Answer»

Answer:

see below

Step-by-step explanation:

PRESSURE inside a fluid = ρgh , in this case ρ = 1000 KG m

3

so ,

1000 = (1000)(10) (h)

hence h = 0.1 m = 10 cm

hence OPTION (A) is correct

Discussion

34.	1ten=ones. 1thousand=hundred. 1crore =ten lakh10 ten =hundred1ten thousand=thousand
Answer» TEN THOUSAND = 100 TIMES 100

Discussion

35.	The interior angle of regular polygon is four times it's exterior angle find the sum of interior angle
Answer» Answer: hope it helps Step-by-step explanation: The SUM of the INTERIOR angles of a polygon is four times the sum of its EXTERIOR angles. The sum of the exterior angles of a polygon is always EQUAL to 360 o . The sum of the interior angles of polygon = 180(n−2) => 180(n−2)=4×360 => n−2=8 => n=10 Number of sides in the polygon = 10

35.

The interior angle of regular polygon is four times it's exterior angle find the sum of interior angle

Answer»

Answer:

hope it helps

Step-by-step explanation:

The SUM of the INTERIOR angles of a polygon is four times the sum of its EXTERIOR angles.

The sum of the exterior angles of a polygon is always EQUAL to 360

o

.

The sum of the interior angles of polygon = 180(n−2)

=> 180(n−2)=4×360

=> n−2=8

=> n=10

Number of sides in the polygon = 10

Discussion

36.	Find the quotient 1.25 divided by 0.05
Answer» THE QUOTIENT OF IT IS 25

36.

Find the quotient 1.25 divided by 0.05

Answer»

THE QUOTIENT OF IT IS 25

Discussion

37.	Find the value of the variable in the following expressions9x+15=20
Answer» Step-by-step explanation: 9x+15=20 9x=20-15 9x=5 x=5/9 I HOPE this ANSWER MAY HELP you

37.

Find the value of the variable in the following expressions9x+15=20

Answer»

Step-by-step explanation:

9x+15=20

9x=20-15

9x=5

x=5/9

I HOPE this ANSWER MAY HELP you

Discussion

38.	Leanght 5.7 breadth 3.3 find area
Answer» Answer: 18.81 Step-by-step EXPLANATION: Area = LENGTH × Breadth So if we MULTIPLY 5.7 by 3.3 then we will get 18.81

38.

Leanght 5.7 breadth 3.3 find area

Answer»

Answer:

18.81

Step-by-step EXPLANATION:

Area = LENGTH × Breadth

So if we MULTIPLY 5.7 by 3.3 then we will get 18.81

Discussion

39.	Akhiles Akhilesh painted 2 by 5 part of a wall and journey painted one by 3 part of the same wall what friction of the same one not be painted
Answer» ANSWER: Step-by-step EXPLANATION: so to solve this we need to add both and SUBTRACT them from 1 so 2/5+1/3= 6+5/15 so =11/15 now, 1-11/15=15-11/15 =4/15 answer

39.

Akhiles Akhilesh painted 2 by 5 part of a wall and journey painted one by 3 part of the same wall what friction of the same one not be painted

Answer»

ANSWER:

Step-by-step EXPLANATION:

so to solve this we need to add both and SUBTRACT them from 1

so 2/5+1/3= 6+5/15

so =11/15

now, 1-11/15=15-11/15

=4/15 answer

Discussion

40.	Seg AD6. In a trapezium ABCDSegAB ! Seg DCBDsegSeg AC I seg BC.IF AD = 30 BC = 30and AB - 50.Find ACO ABCD)
Answer» ANSWER: Here is your answer DEAR

40.

Seg AD6. In a trapezium ABCDSegAB ! Seg DCBDsegSeg AC I seg BC.IF AD = 30 BC = 30and AB - 50.Find ACO ABCD)

Answer»

ANSWER:

Here is your answer DEAR

Discussion

41.	length of some of the edges are given as x,y and z indicate the length of other sides too in term of x, y and z.
Answer» ANSWER: X,y,z Step-by-step EXPLANATION:

41.

length of some of the edges are given as x,y and z indicate the length of other sides too in term of x, y and z.

Answer»

ANSWER:

X,y,z

Step-by-step EXPLANATION:

Discussion

42.	Please help me with the explanation (-6)×(13)
Answer» ANSWER: The ANS will be -48 of the QUESTION

42.

Please help me with the explanation (-6)×(13)

Answer»

ANSWER:

The ANS will be -48 of the QUESTION

Discussion

43.	Two pipes can fill-up a cistern in 3 hours and 5 hours respectively. If bothpipes start filling cistern together, how long will it take for the cistern to get filled?
Answer» Answer: ONE with 3 hours + second one ID filled in 5 hours , both start same time then the both filling gap of 2 hours . I HOPE I help you

43.

Two pipes can fill-up a cistern in 3 hours and 5 hours respectively. If bothpipes start filling cistern together, how long will it take for the cistern to get filled?

Answer»

Answer:

ONE with 3 hours + second one ID filled in 5 hours , both start same time then the both filling gap of 2 hours .

I HOPE I help you

Discussion

44.	at a certain speed of car takes 4 hours to complete a journey of 252 km time taken by a car to cover a journey of the speed of the car is decreased by 9 kilometre per hour
Answer» Given that:- →t=4hr →s=252km Finding speed of the CAR:- →v=s/t →v=252/4 →v=63km/hr →→According to the QUESTION; v-9=v′ 63-9=v′=54km/hr Time TAKEN = s/v →252/54 →4.66hr Hope it helps✌ MARK AS BRAINLIEST.

44.

at a certain speed of car takes 4 hours to complete a journey of 252 km time taken by a car to cover a journey of the speed of the car is decreased by 9 kilometre per hour

Answer»

Given that:-

→t=4hr →s=252km

Finding speed of the CAR:-

→v=s/t

→v=252/4

→v=63km/hr

→→According to the QUESTION;

v-9=v′

63-9=v′=54km/hr

Time TAKEN = s/v

→252/54

→4.66hr

Hope it helps✌

MARK AS BRAINLIEST.

Discussion

45.	X=a sin theta+b cos theta ,y=a cos theta -b sin theta,prove that x2+y2=a2+b2
Answer» Step-by-step EXPLANATION: LET '* ● ' as theta x = asin● + bcos● y = acos● - bsin● now x² + y² (asin● + bcos●)² + (acos● - bsin●)² a²sin²● + b²cos²● + 2a bsin●cos● + a²cos● + b²sin²● - 2AB sin●cos● a²sin²● + a²cos²● + b²cos²● + b²sin²● a² (sin²● + cos²●) + b² (sin²● + cos²●) { since sin²● + cos²● = 1}* a² + b² proved

45.

X=a sin theta+b cos theta ,y=a cos theta -b sin theta,prove that x2+y2=a2+b2

Answer»

Step-by-step EXPLANATION:

LET '* ● *' as theta

x = asin● + bcos●

y = acos● - bsin●

now

x² + y²

(asin● + bcos●)² + (acos● - bsin●)²

a²sin²● + b²cos²● + 2a bsin●cos● + a²cos● + b²sin²● - 2AB sin●cos●

a²sin²● + a²cos²● + b²cos²● + b²sin²●

a² (sin²● + cos²●) + b² (sin²● + cos²●)

*{ since sin²● + cos²● = 1}*

a² + b² proved

Discussion

46.	If 5cosec=13, then find the value of 5cot+12tan/sin+ 2cos
Answer» MARK me as BRAINALIST PLEASE

46.

If 5cosec=13, then find the value of 5cot+12tan/sin+ 2cos

Answer»

MARK me as BRAINALIST PLEASE

Discussion

47.	6 K+17298.Find K.K2
Answer» ANSWER: SINCE 6K+17=29 so 6K=29-17 6K=12 SO K = 12/6 K=2 Step-by-step EXPLANATION:

47.

6 K+17298.Find K.K2

Answer»

ANSWER:

SINCE 6K+17=29

so 6K=29-17

6K=12

SO K = 12/6

K=2

Step-by-step EXPLANATION:

Discussion

48.	Find the square root ofa,31.36b,7921by division method
Answer» 31.36 25 636 636 Step-by-step EXPLANATION: i HOPE you UNDERSTAND these ANSWERS

48.

Find the square root ofa,31.36b,7921by division method

Answer»

31.36

25

636

Step-by-step EXPLANATION:

i HOPE you UNDERSTAND these ANSWERS

Discussion

49.	X+y= 4,3x-2y=4 detrminat method find d
Answer» ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Q1) x+y=4 ,3x-2y=4.determinant METHOD FIND d $\: \bullet \bf{x + y = 4 \: \: \: ...(1)}$ $\: \bullet \bf{3x - 2y = 4....(2)}$ $\: \\ \implies \underline{ \bf{by \: using \: determinant \: form}}$ $\: \: \: \underline{ \boxed{ \bf \color{red} \: to \: find \to \: the \: value \: of \: d}}$ $\: \huge \underline{ \boxed{ \bf{solution}}}$ A= $\left[\begin{array}{cc}1&1&4\\3&-2&4\\\end{array}\right]\\$ $\: \implies \displaystyle \tt{(1 \times - 2) - (1 \times 3})$ $\: \implies \displaystyle \tt{( - 2) - (3)}$ $\: \implies \displaystyle \tt{ - 5}$ $\: \: \bullet \underline { \boxed{ \bf \color{brown} \: the \: value \: of \: determinant (d) \: is \: - 5}}$

49.

X+y= 4,3x-2y=4 detrminat method find d

Answer»

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Q1) x+y=4 ,3x-2y=4.determinant METHOD FIND d

$\: \bullet \bf{x + y = 4 \: \: \: ...(1)}$

$\: \bullet \bf{3x - 2y = 4....(2)}$

$\: \\ \implies \underline{ \bf{by \: using \: determinant \: form}}$

$\: \: \: \underline{ \boxed{ \bf \color{red} \: to \: find \to \: the \: value \: of \: d}}$

$\: \huge \underline{ \boxed{ \bf{solution}}}$

A= $\left[\begin{array}{cc}1&1&4\\3&-2&4\\\end{array}\right]\\$

$\: \implies \displaystyle \tt{(1 \times - 2) - (1 \times 3})$

$\: \implies \displaystyle \tt{( - 2) - (3)}$

$\: \implies \displaystyle \tt{ - 5}$

$\: \: \bullet \underline { \boxed{ \bf \color{brown} \: the \: value \: of \: determinant (d) \: is \: - 5}}$

Discussion

50.	The square root of a number whose prime factorization is 2 x 2 x 3 x 3 x 3 x3 x 5 x 5 isद स्क्वायर रूट ऑफ अ नंबर ऑफ प्राइम फैक्टराइजेशन इज टू मल्टीप्लाई टू मल्टीप्लाई 3 मल्टी 3 मल्टीप्लाई 3 मल्टीप्लाई 3 मल्टीप्लाई फाइव प्लस फाइव
Answer» Answer: RESOLVING 484 as the product of primes, we get 484 = 2 × 2 × 11 × 11 √484 = √(2 × 2 × 11 × 11) = 2 × 11 Therefore, √484 = 22 2. Find the square root of 324. Solution: The square root of 324 by PRIME factorization, we get 324 = 2 × 2 × 3 × 3 × 3 × 3 √324 = √(2 × 2 × 3 × 3 × 3 × 3) = 2 × 3 × 3

50.

The square root of a number whose prime factorization is 2 x 2 x 3 x 3 x 3 x3 x 5 x 5 isद स्क्वायर रूट ऑफ अ नंबर ऑफ प्राइम फैक्टराइजेशन इज टू मल्टीप्लाई टू मल्टीप्लाई 3 मल्टी 3 मल्टीप्लाई 3 मल्टीप्लाई 3 मल्टीप्लाई फाइव प्लस फाइव

Answer»

Answer:

RESOLVING 484 as the product of primes, we get

484 = 2 × 2 × 11 × 11

√484 = √(2 × 2 × 11 × 11)

= 2 × 11

Therefore, √484 = 22

2. Find the square root of 324.

Solution:

The square root of 324 by PRIME factorization, we get

324 = 2 × 2 × 3 × 3 × 3 × 3

√324 = √(2 × 2 × 3 × 3 × 3 × 3)

= 2 × 3 × 3

Discussion

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