332354 + Interview Questions in Secondary School in Math

1.	58x + 52 = 78x - 78does this have 1 solution?
Answer» HOPE it HELPS..............

Discussion

2.	If a carton can hold 25.50 kgs of cookies, how many batches ofcookies of 8.9 kg each be placed?
Answer» Answer: 3 batches Step-by-step explanation: Round off 25.50 & 8.9=26 & 9 =>26/9=2.8=3(APPROXIMATE)

2.

If a carton can hold 25.50 kgs of cookies, how many batches ofcookies of 8.9 kg each be placed?

Answer»

Answer:

3 batches

Step-by-step explanation:

Round off 25.50 & 8.9=26 & 9

=>26/9=2.8=3(APPROXIMATE)

Discussion

3.	What the missing angle?
Answer» Answer: 28 and 47 MARK me as brainlliest

3.

What the missing angle?

Answer»

Answer:

28 and 47

MARK me as brainlliest

Discussion

4.	ஆடு50பைசா குதிரை 3ரூபாய் யானை
Answer» ANSWER: you KEPT the question in Tamil so I can't UNDERSTAND that.

4.

ஆடு50பைசா குதிரை 3ரூபாய் யானை

Answer»

ANSWER:

you KEPT the question in Tamil so I can't UNDERSTAND that.

Discussion

5.	Xsin2y=ycos2x,dy/dx?
Answer» This is the ANSWER to your QUESTION

Discussion

6.	These are my questions
Answer»

Discussion

7.	14. If x = 2-√3, find the value of x²+1/x²
Answer» ANSWER: ${x}^{2} + \frac{1}{ {x}^{2} } = (x + \frac{1}{x} ) ^{2} - 2 \\ = 2 - \sqrt{3} + \frac{1}{2 - \sqrt{3} } - 2\\ = 2 - \sqrt{3 } + 2 + \sqrt{3} - 2 \\ = 2anssssssssssssssss$ Step-by-step EXPLANATION: PLEASE MARK as a RESULT

7.

14. If x = 2-√3, find the value of x²+1/x²

Answer»

ANSWER:

${x}^{2} + \frac{1}{ {x}^{2} } = (x + \frac{1}{x} ) ^{2} - 2 \\ = 2 - \sqrt{3} + \frac{1}{2 - \sqrt{3} } - 2\\ = 2 - \sqrt{3 } + 2 + \sqrt{3} - 2 \\ = 2anssssssssssssssss$

Step-by-step EXPLANATION:

PLEASE MARK as a RESULT

Discussion

8.	Solve any with proveDon't write anything Solution should be correct
Answer» Step-by-step explanation: 1+110=20 382=48 410-2=38 1+3-4=0 1810=80 10-2+2=10

8.

Solve any with proveDon't write anything Solution should be correct

Answer»

Step-by-step explanation:

1+1*10=20

3*8*2=48

4*10-2=38

1+3-4=0

1*8*10=80

10-2+2=10

Discussion

9.	How many solution did x-4y=5
Answer» Step-by-step EXPLANATION: only ONE( 1 ) solution x-4y=5x x =5x+4y it is linear EQAUTION it has only one "0" PLS mark me as a brilliant and follow me

9.

How many solution did x-4y=5

Answer»

Step-by-step EXPLANATION:

only ONE( 1 ) solution

x-4y=5x

x =5x+4y

it is linear EQAUTION

it has only one "0"

PLS mark me as a brilliant and follow me

Discussion

10.	Angle ABC=angle PRQ write thecorresponding sides and angles?
Answer» Step-by-step EXPLANATION: the CORRESPONDING LINES and ANGLES are angle A = angle P angle B= angle R angle C= angle Q AB=PR BC=RQ AC = PQ

10.

Angle ABC=angle PRQ write thecorresponding sides and angles?

Answer»

Step-by-step EXPLANATION:

the CORRESPONDING LINES and ANGLES are

angle A = angle P
angle B= angle R
angle C= angle Q
AB=PR
BC=RQ
AC = PQ

Discussion

11.	The number of ways to find a password with 7keys out of 9keys
Answer» Answer: 181440 Step-by-step EXPLANATION: imagine 7 place HOLDERS as digits of passwords _ _ _ _ _ _ _ now imagine you have basket of 9 entity at START you have a total of 9 objects you can place in the first place holder. you KEEP and similarly in the second placeholder you can place any object from a total of 8 objects. if you continue this pattern and apply the principle of counting to you'll end up with 9876543 _ _ _ _ _ _ _ multiply these values to get your answer . you can shorten this process by the formula (9!)/(9-7)!

11.

The number of ways to find a password with 7keys out of 9keys

Answer»

Answer:

181440

Step-by-step EXPLANATION:

imagine 7 place HOLDERS as digits of passwords

_ _ _ _ _ _ _ now imagine you have basket of 9 entity

at START you have a total of 9 objects you can place in the first place holder.

you KEEP and similarly in the second placeholder you can place any object from a total of 8 objects. if you continue this pattern and apply the principle of counting to you'll end up with

9*8*7*6*5*4*3

_ _ _ _ _ _ _

multiply these values to get your answer .

you can shorten this process by the formula

(9!)/(9-7)!

Discussion

12.	What would be the answer of 3x+5/4x+2=3x+4/4x+7
Answer» ANSWER: jgyhojftvobthihhvgrax*38292929

12.

What would be the answer of 3x+5/4x+2=3x+4/4x+7

Answer»

ANSWER:

jgyhojftvobthihhvgrax*38292929

Discussion

13.	If a:b=2:3 distribute rupess 500
Answer» Answer: 200:300 RUPEES to each. a and B RESPECTIVELY

13.

If a:b=2:3 distribute rupess 500

Answer»

Answer:

200:300 RUPEES to each. a and B RESPECTIVELY

Discussion

14.	1. Find the mean of the following data.(a) 9, 7, 11, 13, 2, 4, 5, 5(b) 16, 18, 19, 21, 23, 23, 27, 29, 29, 35(c) 2.2, 10.2, 14.7, 5.9, 4.9, 11.1, 10.52. The mean of 8, 11, 6, 14, x and 13 is 66. Find the value of the observation x.3. The mean of 6, 8, x + 2, 10, 2x - 1, and 2 is 9. Find the value of x and also the value of theobservation in the data.4. The set of scores 12, 5, 7, -8, x, 10 has a mean of 5. Find the value of x.5. Find the mean of the following set of integers.8, 11, –6, 22, –3
Answer» 1. a) 9, 7, 11, 13, 2, 4, 5, 5 We have to find the mean of the given data. Solution: We know that: Mean = $\dfrac{Sum of all observation}{Total number of observations}$ ∴ Mean = $\dfrac{9+7+11+13+2+4+5+5}{8}$ = $\dfrac{56}{8}$ = 7 Thus, the mean of the given data is 7. 1. b) 16, 18, 19, 21, 23, 23, 27, 29, 29, 35 We have to find the mean of the given data. Solution: We know that: Mean = $\dfrac{Sum of all observation}{Total number of observations}$ ∴ Mean = $\dfrac{16+18+19+21+23+23+27+29+29+35}{10}$ = $\dfrac{240}{10}$ = 24 Thus, the mean of the given data is 24. 1. c) 2.2, 10.2, 14.7, 5.9, 4.9, 11.1, 10.5 We have to find the mean of the given data. Solution: We know that: Mean = $\dfrac{Sum of all observation}{Total number of observations}$ ∴ Mean = $\dfrac{2.2+10.2+14.7+5.9+4.9+11.1+10.5}{7}$ = $\dfrac{59.5}{7}$ = 8.5 Thus, the mean of the given data is 8.5. 2. The mean of 8, 11, 6, 14, x and 13 is 66. Find the VALUE of the observation x We have to find, the value of x in the given observations. Solution: We know that: Mean = $\dfrac{Sum of all observation}{Total number of observations}$ ∴ $\dfrac{8+11+6+14+x+13}{6}$ = 66 ⇒ 52 + x = 396 ⇒ x = 396 - 52 ⇒ x = 344 Thus, the value of x is 344. 3. The mean of 6, 8, x + 2, 10, 2x - 1, and 2 is 9. Find the value of x and also the value of the observation in the data. We have to find, the value of x and also find the value of observations in the data. Solution: We know that: Mean = $\dfrac{Sum of all observation}{Total number of observations}$ ∴ $\dfrac{6+8+(x+2)+10+(2x-1)+2}{6}$ = 9 ⇒ 27 + 3x = 54 ⇒ 3x = 27 ⇒ x = 9 Thus, the value of x is 9. The value of the observation in the data: 6, 8, (9 + 2), 10, (18 - 1) and 2 = 6, 8, 11, 10, 17 and 2 ∴ The value of the observation in the data are 6, 8, 11, 10, 17 and 2. 4. The set of scores 12, 5, 7, -8, x, 10 has a mean of 5. Find the value of x. We have to find, the value of x in the given observations. Solution: We know that: Mean = $\dfrac{Sum of all observation}{Total number of observations}$ ∴ $\dfrac{12+5+7-8+x+10}{6}$ = 5 ⇒ 26 + x = 30 ⇒ x = 30 - 26 ⇒ x = 4 Thus, the value of x is 4. 5. Find the mean of the following set of integers. 8, 11, – 6, 22, – 3 We have to find the mean of the given data. Solution: We know that: Mean = $\dfrac{Sum of all observation}{Total number of observations}$ ∴ Mean = $\dfrac{8+11-6+22-3}{5}$ = $\dfrac{32}{5}$ = 6.4 Thus, the mean of the given data is 6.4.

14.

1. Find the mean of the following data.(a) 9, 7, 11, 13, 2, 4, 5, 5(b) 16, 18, 19, 21, 23, 23, 27, 29, 29, 35(c) 2.2, 10.2, 14.7, 5.9, 4.9, 11.1, 10.52. The mean of 8, 11, 6, 14, x and 13 is 66. Find the value of the observation x.3. The mean of 6, 8, x + 2, 10, 2x - 1, and 2 is 9. Find the value of x and also the value of theobservation in the data.4. The set of scores 12, 5, 7, -8, x, 10 has a mean of 5. Find the value of x.5. Find the mean of the following set of integers.8, 11, –6, 22, –3

Answer»

1. a) 9, 7, 11, 13, 2, 4, 5, 5

We have to find the mean of the given data.

Solution:

We know that:

Mean = $\dfrac{Sum of all observation}{Total number of observations}$

∴ Mean = $\dfrac{9+7+11+13+2+4+5+5}{8}$

= $\dfrac{56}{8}$ = 7

Thus, the mean of the given data is 7.

1. b) 16, 18, 19, 21, 23, 23, 27, 29, 29, 35

We have to find the mean of the given data.

Solution:

We know that:

Mean = $\dfrac{Sum of all observation}{Total number of observations}$

∴ Mean = $\dfrac{16+18+19+21+23+23+27+29+29+35}{10}$

= $\dfrac{240}{10}$ = 24

Thus, the mean of the given data is 24.

1. c) 2.2, 10.2, 14.7, 5.9, 4.9, 11.1, 10.5

We have to find the mean of the given data.

Solution:

We know that:

Mean = $\dfrac{Sum of all observation}{Total number of observations}$

∴ Mean = $\dfrac{2.2+10.2+14.7+5.9+4.9+11.1+10.5}{7}$

= $\dfrac{59.5}{7}$ = 8.5

Thus, the mean of the given data is 8.5.

2. The mean of 8, 11, 6, 14, x and 13 is 66. Find the VALUE of the observation x

We have to find, the value of x in the given observations.

Solution:

We know that:

Mean = $\dfrac{Sum of all observation}{Total number of observations}$

∴ $\dfrac{8+11+6+14+x+13}{6}$ = 66

⇒ 52 + x = 396

⇒ x = 396 - 52

⇒ x = 344

Thus, the value of x is 344.

3. The mean of 6, 8, x + 2, 10, 2x - 1, and 2 is 9. Find the value of x and also the value of the observation in the data.

We have to find, the value of x and also find the value of observations in the data.

Solution:

We know that:

Mean = $\dfrac{Sum of all observation}{Total number of observations}$

∴ $\dfrac{6+8+(x+2)+10+(2x-1)+2}{6}$ = 9

⇒ 27 + 3x = 54

⇒ 3x = 27

⇒ x = 9

Thus, the value of x is 9.

The value of the observation in the data:

6, 8, (9 + 2), 10, (18 - 1) and 2

= 6, 8, 11, 10, 17 and 2

∴ The value of the observation in the data are 6, 8, 11, 10, 17 and 2.

4. The set of scores 12, 5, 7, -8, x, 10 has a mean of 5. Find the value of x.

We have to find, the value of x in the given observations.

Solution:

We know that:

Mean = $\dfrac{Sum of all observation}{Total number of observations}$

∴ $\dfrac{12+5+7-8+x+10}{6}$ = 5

⇒ 26 + x = 30

⇒ x = 30 - 26

⇒ x = 4

Thus, the value of x is 4.

5. Find the mean of the following set of integers.

8, 11, – 6, 22, – 3

We have to find the mean of the given data.

Solution:

We know that:

Mean = $\dfrac{Sum of all observation}{Total number of observations}$

∴ Mean = $\dfrac{8+11-6+22-3}{5}$

= $\dfrac{32}{5}$ = 6.4

Thus, the mean of the given data is 6.4.

Discussion

15.	Rationalise the denominator of ^2+^3/3^2-2^3
Answer» ANSWER: so these QUESTION answer is 2

15.

Rationalise the denominator of ^2+^3/3^2-2^3

Answer»

ANSWER:

so these QUESTION answer is 2

Discussion

16.	Find the 10th term of GP whose first term is 2 and 8th term is -256
Answer» Step-by-step explanation: a = 2 ar^7 = -256 2r^7 = -256 R^7 = -128 r^7 = (-2)^7 r = -2 10th term A(10) = ar^9 = 2(-2)^9 = 2(-512) = -1024

16.

Find the 10th term of GP whose first term is 2 and 8th term is -256

Answer»

Step-by-step explanation:

a = 2

ar^7 = -256

2r^7 = -256

R^7 = -128

r^7 = (-2)^7

r = -2

10th term A(10) = ar^9 = 2(-2)^9 = 2(-512)

= -1024

Discussion

17.	alpha and beta are the zeroes of equation ax^2+bx+c=0 , find i)alpha ^2- beta ^2 ii) alpha ^6+ beta^6
Answer» ANSWER: Step-by-step EXPLANATION: HOPE you UNDERSTAND...................................................................................................../.....///////////////////////////////////////////////////////////////////////

17.

alpha and beta are the zeroes of equation ax^2+bx+c=0 , find i)alpha ^2- beta ^2 ii) alpha ^6+ beta^6

Answer»

ANSWER:

Step-by-step EXPLANATION:

HOPE you UNDERSTAND...................................................................................................../.....///////////////////////////////////////////////////////////////////////

Discussion

18.	The mean and median of a distribution are 14 and 15 respectively. Thevalue of mode is
Answer» Answer: 17 Step-by-step explanation: 3median = 2mean +mode 3 (15) = 2(14) + mode mode = 45 - 28 mode = 17

18.

The mean and median of a distribution are 14 and 15 respectively. Thevalue of mode is

Answer»

Answer:

17

Step-by-step explanation:

3median = 2mean +mode

3 (15) = 2(14) + mode

mode = 45 - 28

mode = 17

Discussion

19.	In the adjoining fegure ap -4 cm,bq-6cm and cr-5cm find perimeter of abc
Answer» Answer: The perimeter of ∆ABC is 30 cm Step-by-step explanation: Here, in the above triangle Seg AB is the tangent at point P, Seg AC is the tangent at POINT R and Seg BC is the tangent at point Q Also, BY USING *TANGENT* *SEGMENT* *THEOREM* : *TANGENT SEGMENTS* *DRAWN* *FROM* AN *EXTERNAL* POINT TO A CIRCLE ARE CONGRUENT. :. AP congruent AR :. AP = 4 cm then AR = 4 cm :. BQ congruent BP :. BQ = 6 cm then BP = 6 cm :. RC congruent QC :. RC = 5 cm then QC = 5 cm then, :. AB = AP + BP ---(Points A,P & B are collinear) :. AB = 10 cm :. AC = AR + RC ---(Points A,R & C are collinear) :. AC = 9 cm :. BC = BQ + QC ---(Points B,Q & C are collinear) :. BC = 11 cm :. Perimeter of triangle = AB + BC + AC :. Perimeter of triangle = 10 + 11 + 9 :. Perimeter of triangle = 30 cm HOPE IT HELPS YOU !! MARK ME AS BRAINLIEST** .

19.

In the adjoining fegure ap -4 cm,bq-6cm and cr-5cm find perimeter of abc

Answer»

Answer:

The perimeter of ∆ABC is 30 cm

Step-by-step explanation:

Here, in the above triangle

Seg AB is the tangent at point P,

Seg AC is the tangent at POINT R

and

Seg BC is the tangent at point Q

Also,

BY USING TANGENT SEGMENT THEOREM :

TANGENT SEGMENTS DRAWN FROM AN EXTERNAL POINT TO A CIRCLE ARE CONGRUENT.

:. AP congruent AR

:. AP = 4 cm then AR = 4 cm

:. BQ congruent BP

:. BQ = 6 cm then BP = 6 cm

:. RC congruent QC

:. RC = 5 cm then QC = 5 cm

then,

:. AB = AP + BP ---(Points A,P & B are collinear)

:. AB = 10 cm

:. AC = AR + RC ---(Points A,R & C are collinear)

:. AC = 9 cm

:. BC = BQ + QC ---(Points B,Q & C are collinear)

:. BC = 11 cm

:. Perimeter of triangle = AB + BC + AC

:. Perimeter of triangle = 10 + 11 + 9

:. Perimeter of triangle = 30 cm

HOPE IT HELPS YOU !!

MARK ME AS BRAINLIEST .

Discussion

20.	(1)A convex mirror used for rear view on automobile has a curvature of 6 metreif a bus is located 10 metre from this mirror find the position nature and size of the image.
Answer» Answer: HI GOOD morning how are you still there any chance of getting a long way from its use of the DAY and TIME to get a chance

20.

(1)A convex mirror used for rear view on automobile has a curvature of 6 metreif a bus is located 10 metre from this mirror find the position nature and size of the image.

Answer»

Answer:

HI GOOD morning how are you still there any chance of getting a long way from its use of the DAY and TIME to get a chance

Discussion

21.	Find two rational numbers whose absolute value is 5/8,3/7,15/19 and 3/38
Answer» Step-by-step explanation: GIVEN find two rational NUMBERS whose absolute value is 5/8,3/7,15/19 and 3/38 Absolute value of a real number will be a positive value regardless of sign Given We need to find two rational numbers for the given absolute value 1. 5/8 = l – 5/8 l 5/8 = l 5/8l 2. 3/7 = l -3/7l 3/7 = l 3/7 l 3. 15/19 = l – 15/19 l 15/19 = l 15/19 l 4. 3/38 = l -3/38 l 3/38 = l 3/38 l Reference link will be brainly.in/question/3618362

21.

Find two rational numbers whose absolute value is 5/8,3/7,15/19 and 3/38

Answer»

Step-by-step explanation:

GIVEN find two rational NUMBERS whose absolute value is 5/8,3/7,15/19 and 3/38

Absolute value of a real number will be a positive value regardless of sign
Given We need to find two rational numbers for the given absolute value

1. 5/8 = l – 5/8 l

5/8 = l 5/8l

2. 3/7 = l -3/7l

3/7 = l 3/7 l

3. 15/19 = l – 15/19 l

15/19 = l 15/19 l

4. 3/38 = l -3/38 l

3/38 = l 3/38 l

Reference link will be

brainly.in/question/3618362

Discussion

22.	If 3x-4y=7; 5x+2y=3 then value of 7x+5y is
Answer» Step-by-step EXPLANATION: multiplying SECOND equation by 2 then we get 10x+4y=6 solving first and second equation we get 13x=13 then the value of X is 1 substitute x value in first equation we get y=-1 substitute x and y value in 7x+5y 7×1+5×-1 7-5 2

22.

If 3x-4y=7; 5x+2y=3 then value of 7x+5y is

Answer»

Step-by-step EXPLANATION:

multiplying SECOND equation by 2

then we get 10x+4y=6

solving first and second equation we get

13x=13

then the value of X is 1

substitute x value in first equation we get

y=-1

substitute x and y value in 7x+5y

7×1+5×-1

7-5

2

Discussion

23.	Please give me correct Explanation.
Answer» $\bf \pink{answer}$ ⭐see ATTACHMENT here ⭐

23.

Please give me correct Explanation.

Answer»

$\bf \pink{answer}$

⭐see ATTACHMENT here ⭐

Discussion

24.	Hey mates ....please help me it's urgentThis is a set ??Popular leaders of the country
Answer» Answer: No, it is not a SET. Step-by-step explanation: The reason is that the term POPULAR is relative and DIFFERS from person to person. A set is a well defined collection. *Hope* *it helps* *you. PLEASE* *mark as Brainliest*.

24.

Hey mates ....please help me it's urgentThis is a set ??Popular leaders of the country

Answer»

Answer:

No, it is not a SET.

Step-by-step explanation:

The reason is that the term POPULAR is relative and DIFFERS from person to person.

A set is a well defined collection.

Hope it helps you.

PLEASE mark as Brainliest.

Discussion

25.	sum of digits of two digit number is 9.When the digits are interchanged the new number is greater than the original number by 9.Find the original number.
Answer» Given : Sum of digits of TWO digit number is 9. When the digits are interchanged the new number is greater than the original number by 9. To FIND : The original number. SOLUTION : Let the digit at the tens place be x. Let the digit at the units place be y. Original Number = (10x + y) Case 1 : The sum of tens digit and units digit is 9. Equation : $\implies$ $\sf{x+y=9}$ $\sf{x=9-y\:\:\:\:\bold{1}}$ Case 2 : When the digits of the two digit number are interchanged, the new number is greater than original number by 9. Reversed Number = (10y +x) Equation : $\implies$ $\sf{10y+x=10x+y+9}$ $\implies$ $\sf{10y-y=10x-x+9}$ $\implies$ $\sf{9y=9x+9}$ $\implies$ $\sf{9x+9=9y}$ $\implies$ $\sf{9x-9y=-9}$ $\implies$ $\sf{9(9-y) -9y=-9}$ $\implies$ $\sf{81-9y-9y=-9}$ $\implies$ $\sf{-18y=-9-81}$ $\implies$ $\sf{-18y=-90}$ $\implies$ $\sf{y=\dfrac{-90}{-18}}$ $\implies$ $\sf{y=\dfrac{90}{18}}$ $\implies$ $\sf{y=<klux>5</klux>}$ Substitute, y = 5 in equation (1), $\implies$ $\sf{x=9-y}$ $\implies$ $\sf{x=9-5}$ $\implies$ $\sf{x=4}$ $\large{\boxed{\bold{Ten's\:digit\:=\:x\:=\:4}}}$ $\large{\boxed{\bold{Unit's\:digit\:=\:y\:=\:5}}}$ $\large{\boxed{\bold{\purple{Original\:Number\:=\:10x+y=10(4)+5=40+5}}}}$

25.

sum of digits of two digit number is 9.When the digits are interchanged the new number is greater than the original number by 9.Find the original number.

Answer»

Given :

Sum of digits of TWO digit number is 9.
When the digits are interchanged the new number is greater than the original number by 9.

To FIND :

The original number.

SOLUTION :

Let the digit at the tens place be x.

Let the digit at the units place be y.

Original Number = (10x + y)

Case 1 :

The sum of tens digit and units digit is 9.

Equation :

$\implies$ $\sf{x+y=9}$

$\sf{x=9-y\:\:\:\:\bold{1}}$

Case 2 :

When the digits of the two digit number are interchanged, the new number is greater than original number by 9.

Reversed Number = (10y +x)

Equation :

$\implies$ $\sf{10y+x=10x+y+9}$

$\implies$ $\sf{10y-y=10x-x+9}$

$\implies$ $\sf{9y=9x+9}$

$\implies$ $\sf{9x+9=9y}$

$\implies$ $\sf{9x-9y=-9}$

$\implies$ $\sf{9(9-y) -9y=-9}$

$\implies$ $\sf{81-9y-9y=-9}$

$\implies$ $\sf{-18y=-9-81}$

$\implies$ $\sf{-18y=-90}$

$\implies$ $\sf{y=\dfrac{-90}{-18}}$

$\implies$ $\sf{y=\dfrac{90}{18}}$

$\implies$ $\sf{y=<klux>5</klux>}$

Substitute, y = 5 in equation (1),

$\implies$ $\sf{x=9-y}$

$\implies$ $\sf{x=9-5}$

$\implies$ $\sf{x=4}$

$\large{\boxed{\bold{Ten's\:digit\:=\:x\:=\:4}}}$

$\large{\boxed{\bold{Unit's\:digit\:=\:y\:=\:5}}}$

$\large{\boxed{\bold{\purple{Original\:Number\:=\:10x+y=10(4)+5=40+5}}}}$

Discussion

26.	please answer me fast whomsoever answers fast I'll mark that person as brainnlest and this from the chapter rational numbers!!!
Answer» ANSWER: Step-by-step EXPLANATION:

26.

please answer me fast whomsoever answers fast I'll mark that person as brainnlest and this from the chapter rational numbers!!!

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

27.	If (2√3-√2)÷(√3+2√2)=m+n√6,find the value of m and n respectively..
Answer» ANSWER: Step-by-step EXPLANATION:

27.

If (2√3-√2)÷(√3+2√2)=m+n√6,find the value of m and n respectively..

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

28.	If x + 1 = 2 cosa, y + = 2 cos B, then xy +=1) cos(a + b) 2) 2 cos(a +B)3) 2 sin(a +B) 4) sin(a +B)
Answer» ANSWER: Answer is 2 HOPE IT WON'T HELP YOU

28.

If x + 1 = 2 cosa, y + = 2 cos B, then xy +=1) cos(a + b) 2) 2 cos(a +B)3) 2 sin(a +B) 4) sin(a +B)

Answer»

ANSWER:

Answer is 2

HOPE IT WON'T HELP YOU

Discussion

29.	If ∆ABC ~ ∆ DEF and angle A=30°; AngleB = 50° then Angle E + Angle F is equal to ____
Answer» Answer: 150° Step-by-step EXPLANATION: Given, ∆ABC~∆DEF, then: In∆ABC and ∆DEF, ANGLE A = Angle D = 30° Angle B = Angle E = 50° Angle C = Angle F = {180°-(30°+50°)} =100° (By angle SUM PROPERTY of ∆) therefore, Angle E + Angle F = 100°+50°=150°

29.

If ∆ABC ~ ∆ DEF and angle A=30°; AngleB = 50° then Angle E + Angle F is equal to ____

Answer»

Answer:

150°

Step-by-step EXPLANATION:

Given,

∆ABC~∆DEF, then:

In∆ABC and ∆DEF,

ANGLE A = Angle D = 30°

Angle B = Angle E = 50°

Angle C = Angle F = {180°-(30°+50°)} =100°

(By angle SUM PROPERTY of ∆)

therefore,

Angle E + Angle F = 100°+50°=150°

Discussion

30.	If a motor boat can travel 30 km upstream and 28 downstream in 7h it can travel 21 km upstream and return in 5h find the speed of boat in still water and the speed of the streamPLZ answer fast and give step to step explaination
Answer» Answer: Step-by-step explanation: let he speed of boat be "x" and the speed of stream be"y" * for upstream the speed will be = x-y * for downstream the speed will be= x+y according to the information-: 30/x-y + 28/x+y = 7 -------------(eq 1) 21/x - y + 21/x + y = 5 ---------(eq 2) let :- 1/x-y= a and 1/x+y = b therefor the above equation will be CHANGED to:- 30A + 28b = 7 21a + 21b = 5 on solving both the equation:- a=1/6 b=1/14 now we know that a= 1/x-y and b = 1/x+y x - y = 6 ---- (eq 3) x + y = 14 --------(eq4) from solving eq -3 and eq- 4 x=10 (speed of boat) y= 4( speed of stream)

30.

If a motor boat can travel 30 km upstream and 28 downstream in 7h it can travel 21 km upstream and return in 5h find the speed of boat in still water and the speed of the streamPLZ answer fast and give step to step explaination

Answer»

Answer:

Step-by-step explanation:

let he speed of boat be "x" and the speed of stream be"y"

* for upstream the speed will be = x-y

* for downstream the speed will be= x+y

according to the information-:

30/x-y + 28/x+y = 7 -------------(eq 1)

21/x - y + 21/x + y = 5 ---------(eq 2)

let :-

1/x-y= a and 1/x+y = b

therefor the above equation will be CHANGED to:-

30A + 28b = 7

21a + 21b = 5

on solving both the equation:-

a=1/6

b=1/14

now we know that

a= 1/x-y and b = 1/x+y

x - y = 6 ---- (eq 3)

x + y = 14 --------(eq4)

from solving eq -3 and eq- 4

x=10 (speed of boat)

y= 4( speed of stream)

Discussion

31.	10/x+y+2/x-y=4;15/x+y-5/x-y=-2
Answer» Step-by-step EXPLANATION: gggyggyyy547oiftbbyyrw224670ppoiyrewqasfhkllmvczzRYT77

31.

10/x+y+2/x-y=4;15/x+y-5/x-y=-2

Answer»

Step-by-step EXPLANATION:

gggyggyyy547oiftbbyyrw224670ppoiyrewqasfhkllmvczzRYT77

Discussion

32.	X + 1 by x is equal to 2 cos alpha Y + 1 by Y is equal to 2 cos beta then X Y + 1 by x y is equals to
Answer» ANSWER: [email PROTECTED]₹3547

32.

X + 1 by x is equal to 2 cos alpha Y + 1 by Y is equal to 2 cos beta then X Y + 1 by x y is equals to

Answer»

ANSWER:

[email PROTECTED]₹3547

Discussion

33.	The estimate d sum of 15,264; 7,427 and 9,382 when the number are rounded to the nearest 1,000isSolve it
Answer» OK BYE for now I am in the HOUSE is in the house is in the house is in the house is in the house is in the house is in the house

Discussion

34.	If alpha and beta are the zeroes of the polynomial x2-3x+k, such that alpha-beta=1, find the value of k
Answer» <P>P(X) = x² - 3X + k α , β are the ZEROES αβ = c/a αβ = k/1 1 = k/1 k = 1

34.

If alpha and beta are the zeroes of the polynomial x2-3x+k, such that alpha-beta=1, find the value of k

Answer»

<P>P(X) = x² - 3X + k

α , β are the ZEROES

αβ = c/a

αβ = k/1

1 = k/1

k = 1

Discussion

35.	Write the square,making use ofthe above pattern a)111111² b)1111111²
Answer» ANSWER: a)111111111111 b)111111111111

35.

Write the square,making use ofthe above pattern a)111111² b)1111111²

Answer»

ANSWER:

a)111111111111

b)111111111111

Discussion

36.	A negative integer raised to an odd positive power is ..............
Answer» if the negative NUMBER is GREATER than POSITIVE then it will be negative if it is SMALLER than positive then it will be positive no HOPE it helps .....

Discussion

37.	In all Indian examination held last year,1642395 students passed and 3539671 students failed. This year 718217 more students have appeared than that of last year. How many students have appeared in these two year?
Answer» ANSWER: No. of STUDENTS passed last YEAR = 1642395 No. of students FAILED last year = 3539671 718217 more students appeared than last year Step-by-step explanation: Total students appeared last year = No.of students passed + No. of students failed last year = 1642395 + 3539671 = 5182066 students Total students appeared in the CURRENT year = 5182066 + 718217 = 5900283 students

37.

In all Indian examination held last year,1642395 students passed and 3539671 students failed. This year 718217 more students have appeared than that of last year. How many students have appeared in these two year?

Answer»

ANSWER:

No. of STUDENTS passed last YEAR = 1642395

No. of students FAILED last year = 3539671

718217 more students appeared than last year

Step-by-step explanation:

Total students appeared last year = No.of students passed + No. of students failed last year

= 1642395 + 3539671

= 5182066 students

Total students appeared in the CURRENT year

= 5182066 + 718217

= 5900283 students

Discussion

38.	The square of which of the following numbers would be odd even number? Why
Answer» ANSWER: QUESTION INCOMPLETE MAT DALO

38.

The square of which of the following numbers would be odd even number? Why

Answer»

ANSWER:

QUESTION INCOMPLETE MAT DALO

Discussion

39.	Use Euclid division algonthmbto find H.C.F of 384 and 26
Answer» Answer: By using EUCLID division algorithm 384 = 26(14) + 20 26 = 20 (1) + 6 20 = 6 (3) + 2 6 = 2 (3) + 1 H. C. F of 384 and 26 is 2 *hope* it is *HELPFUL* if it is *mark* it as *brainliest*

39.

Use Euclid division algonthmbto find H.C.F of 384 and 26

Answer»

Answer:

By using EUCLID division algorithm

384 = 26(14) + 20

26 = 20 (1) + 6

20 = 6 (3) + 2

6 = 2 (3) + 1

H. C. F of 384 and 26 is 2

hope it is HELPFUL

if it is mark it as brainliest

Discussion

40.	A pair of linear equation 9x+12y+21=0 and px+qy+7=0 has infinitely many solution find the value of p and q
Answer» Step-by-step EXPLANATION: this MAY HELP you

40.

A pair of linear equation 9x+12y+21=0 and px+qy+7=0 has infinitely many solution find the value of p and q

Answer»

Step-by-step EXPLANATION:

this MAY HELP you

Discussion

41.	Round off to the nearest thousands 3278
Answer» ANSWER: 3000 will be the answer

41.

Round off to the nearest thousands 3278

Answer»

ANSWER:

3000 will be the answer

Discussion

42.	Find 5 rational number between 3 / 5 and 5 / 6
Answer» Answer: 16/30, 17/30 , 18/30, 19/30, 20/ 30

42.

Find 5 rational number between 3 / 5 and 5 / 6

Answer»

Answer:

16/30, 17/30 , 18/30, 19/30, 20/ 30

Discussion

43.	Simplify (2+root3)(3+root5)
Answer» Answer: HOPE it MAY help u please MARK it as a BRAINLIST answer

43.

Simplify (2+root3)(3+root5)

Answer»

Answer:

HOPE it MAY help u

please MARK it as a BRAINLIST answer

Discussion

44.	(-3x10^4)x(2x10^-3) answer
Answer» answer you R answer SEE that IMAGE it's your answer I hope it will HELP you

44.

(-3x10^4)x(2x10^-3) answer

Answer»

answer

you R answer SEE that IMAGE it's your answer I hope it will HELP you

Discussion

45.	How do you find out the angle of x??
Answer» Answer: x is the exterior angle for the GIVEN triangle Exterior angle = Sum of opposite two interior angles. => x = 29+82 = 111° PLEASE MARK BRAINLIEST PLEASE FOLLOW ME

45.

How do you find out the angle of x??

Answer»

Answer:

x is the exterior angle for the GIVEN triangle

Exterior angle = Sum of opposite two interior angles.

=> x = 29+82 = 111°

PLEASE MARK BRAINLIEST

PLEASE FOLLOW ME

Discussion

46.	What must be added to 5678 4698 to make 6824 572
Answer» Answer: 56784698 cannot be added to any number to MAKE 6824572. as the GIVEN number VALUE is GREATER than the number value given in the result

46.

What must be added to 5678 4698 to make 6824 572

Answer»

Answer:

56784698 cannot be added to any number to MAKE 6824572. as the GIVEN number VALUE is GREATER than the number value given in the result

Discussion

47.	Convert the fraction 7/9, 11/12, 5/6, into like fraction
Answer» HOPE it HELPS................

Discussion

48.	Which segment is both a chord and a diameter? segment
Answer» ANSWER: LINE SEGMENT is both a CHORD and a DIAMETER segment.

48.

Which segment is both a chord and a diameter? segment

Answer»

ANSWER:

LINE SEGMENT is both a CHORD and a DIAMETER segment.

Discussion

49.	Explain why a rectangle is a convex quadriateral
Answer» Answer: The RECTANGLE is a convex QUADRILATERAL because of two diagonals which LIE in the INTERIOR of the rectangle. I hope this will help you please mark it as brainlist answer.

49.

Explain why a rectangle is a convex quadriateral

Answer»

Answer:

The RECTANGLE is a convex QUADRILATERAL because of two diagonals which LIE in the INTERIOR of the rectangle.

I hope this will help you

please mark it as brainlist answer.

Discussion

50.	Zeros of a polynomial 3x square-kx+6 is 3 find k
Answer» $\blue{\bold{\underline{\underline{Answer:}}}}$ $\green{\tt{\therefore{Value\:of\:k=11}}}$ $\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$ $\green{\underline \bold{<klux>GIVEN</klux>: }} \\ \tt: \implies {3x}^{2} - kx + 6 = 0 \\ \\ \tt: \implies zeroes \: of \: polynomial = 3 \\ \\ \red{\underline \bold{to \: find: }} \\ \tt: \implies value \: of \: k = ?$ • ACCORDING to given QUESTION : $\bold{as \: we \: know \: that} \\ \tt: \implies {3x}^{2} - kx + 6 = 0 \\ \\ \tt \circ \: x = 3 \\ \\ \tt: \implies 3 \times {3}^{2} - k \times 3 + 6 = 0 \\ \\ \tt: \implies 3 \times 9 - 3k + 6 \\ \\ \tt: \implies 27 + 6 - 3k = 0 \\ \\ \tt: \implies 33 = 3k \\ \\ \tt: \implies \frac{33}{3} = k \\ \\ \green{\tt: \implies k = 11} \\ \\ \blue{\bold{some \: related \: formula }} \\ \orange{\tt \circ \: d = {b}^{2} - 4ac} \\ \\ \orange{\tt \circ \: x = \frac{ - b \pm \sqrt{d} }{2a} }$

50.

Zeros of a polynomial 3x square-kx+6 is 3 find k

Answer»

$\blue{\bold{\underline{\underline{Answer:}}}}$

$\green{\tt{\therefore{Value\:of\:k=11}}}$

$\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

$\green{\underline \bold{<klux>GIVEN</klux>: }} \\ \tt: \implies {3x}^{2} - kx + 6 = 0 \\ \\ \tt: \implies zeroes \: of \: polynomial = 3 \\ \\ \red{\underline \bold{to \: find: }} \\ \tt: \implies value \: of \: k = ?$

• ACCORDING to given QUESTION :

$\bold{as \: we \: know \: that} \\ \tt: \implies {3x}^{2} - kx + 6 = 0 \\ \\ \tt \circ \: x = 3 \\ \\ \tt: \implies 3 \times {3}^{2} - k \times 3 + 6 = 0 \\ \\ \tt: \implies 3 \times 9 - 3k + 6 \\ \\ \tt: \implies 27 + 6 - 3k = 0 \\ \\ \tt: \implies 33 = 3k \\ \\ \tt: \implies \frac{33}{3} = k \\ \\ \green{\tt: \implies k = 11} \\ \\ \blue{\bold{some \: related \: formula }} \\ \orange{\tt \circ \: d = {b}^{2} - 4ac} \\ \\ \orange{\tt \circ \: x = \frac{ - b \pm \sqrt{d} }{2a} }$

Discussion

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