332354 + Interview Questions in Secondary School in Math

1.	The perimeter of isosceles traingle is 30 cm . The length of its congruent sides is 3 cm more than its base. find the lengths of all sides.By application for simultaneous equations
Answer» Answer: x+3+x+3+x=30 3x+6=30 3x=30-6 3x=24 x=24/3 x=8 it's CONGRUENT sides are 11 each and Base is 8

1.

The perimeter of isosceles traingle is 30 cm . The length of its congruent sides is 3 cm more than its base. find the lengths of all sides.By application for simultaneous equations

Answer»

Answer:

x+3+x+3+x=30

3x+6=30

3x=30-6

3x=24

x=24/3

x=8

it's CONGRUENT sides are 11 each and Base is 8

Discussion

2.	The sum of three number in A.P. is -3 and their product is 8. Find the numbers.
Answer» Answer: -4, -1, 2 Step-by-step EXPLANATION: Hope this helps you Mark as Brainliest answer please

2.

The sum of three number in A.P. is -3 and their product is 8. Find the numbers.

Answer»

Answer:

-4, -1, 2

Step-by-step EXPLANATION:

Hope this helps you

Mark as Brainliest answer please

Discussion

3.	Chapter determinant question6
Answer» Answer: hamana CLASS 1 nahi padhi hay SA kiya bataya ga Step-by-step EXPLANATION: follow me then i TELL

3.

Chapter determinant question6

Answer»

Answer:

hamana CLASS 1 nahi padhi hay SA kiya bataya ga

Step-by-step EXPLANATION:

follow me then i TELL

Discussion

4.	Define Arithmetic progression with example.
Answer» Answer: An *arithmetic* progression is a SEQUENCE of numbers such that the difference of any two successive members is a constant. For example, the sequence 1, 2, 3, 4, ... is an arithmetic progression with common difference 1. Second example: the sequence 3, 5, 7, 9, 11,... is an arithmetic progression the sequence 3, 5, 7, 9, 11,... is an arithmetic progressionwith common difference 2. Third example: the sequence 20, 10, 0, -10, -20, -30, ... is an arithmetic progression the sequence 20, 10, 0, -10, -20, -30, ... is an arithmetic progressionwith common difference -10. hope it helps you... please mark it as a brainlist answer... also please RATE, thanks and follow me... stay home STA**Y SAFE...

4.

Define Arithmetic progression with example.

Answer»

Answer:

An arithmetic progression is a SEQUENCE of numbers such that the difference of any two successive members is a constant.

For example, the sequence 1, 2, 3, 4, ... is an arithmetic progression with common difference 1.

Second example: the sequence 3, 5, 7, 9, 11,... is an arithmetic progression

the sequence 3, 5, 7, 9, 11,... is an arithmetic progressionwith common difference 2.

Third example: the sequence 20, 10, 0, -10, -20, -30, ... is an arithmetic progression

the sequence 20, 10, 0, -10, -20, -30, ... is an arithmetic progressionwith common difference -10.

hope it helps you...

please mark it as a brainlist answer...

also please RATE, thanks and follow me...

stay home STAY SAFE...

Discussion

5.	If you do these two question i will mark you brainliest today and tmr
Answer» ANSWER: Step-by-step explanation: 1st ANGLE = 60 2ND angle = 80 3rd angle = 100 4th angle = 120 120-60=60

5.

If you do these two question i will mark you brainliest today and tmr

Answer»

ANSWER:

Step-by-step explanation:

1st ANGLE = 60

2ND angle = 80

3rd angle = 100

4th angle = 120

120-60=60

Discussion

6.	2y^2 +27y +13 please find the answer
Answer» ✯✯ QUESTION ✯✯ ${2y}^{2}+27y+13$ ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ✰✰ ANSWER ✰✰ $⇝{2y}^{2}+27y+13$ $⇝{2y}^{2} + (26y+1y) + 13$ Taking out COMMONS :. $⇝y (y + 13) + 1 (y + 13)$ $⇝(y + 1 ) (y + 13)$ $⇝y = -1 \:and\: y = -13$

6.

2y^2 +27y +13 please find the answer

Answer»

✯✯ QUESTION ✯✯

${2y}^{2}+27y+13$

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

✰✰ ANSWER ✰✰

$⇝{2y}^{2}+27y+13$

$⇝{2y}^{2} + (26y+1y) + 13$

Taking out COMMONS :.

$⇝y (y + 13) + 1 (y + 13)$

$⇝(y + 1 ) (y + 13)$

$⇝y = -1 \:and\: y = -13$

Discussion

7.	What is the correct sequence of 1,2.65,4.3,5.95,7.6
Answer» ANSWER: Step-by-step explanation: 1,2.65, 4.3,5.95 ,7.6

7.

What is the correct sequence of 1,2.65,4.3,5.95,7.6

Answer»

ANSWER:

Step-by-step explanation:

1,2.65, 4.3,5.95 ,7.6

Discussion

8.	A man travels 1/5 of his journey by train, 5/7 of it by bus and walks the rest of the distance. If he walks 3km, then how much distance did he travel by bus?
Answer» DISTANCE TRAVELLED by BUS = 5/7 of total distance . => distance travelled =5/7*3 =15/7 =2.144... =2.14

Discussion

9.	Multiply 4 3 ___ x ___ 9 2
Answer» 4/9×3/2=12/18=2/3 2/3 is the RIGHT ANSWER HOPE it HELPS

9.

Multiply 4 3 _ x _ 9 2

Answer»

4/9×3/2=12/18=2/3

2/3 is the RIGHT ANSWER HOPE it HELPS

Discussion

10.	Find the area of the quadrilateral formed by the points (1, 2), (2, -3), (-2, 4) and (0,5) taken inorder.
Answer» Step-by-step explanation: 1- draw a quadrilateral with the given points taken in order 2-name the quadrilateral as ABCD 3-join ac 4-find out the area of the two triangles abc and adc .. 5-add areas of both triangles ONE will be (-13/2) and other will be (-5/2) 6- after adding the area of quadrilateral will be -\|9\| sq.units

10.

Find the area of the quadrilateral formed by the points (1, 2), (2, -3), (-2, 4) and (0,5) taken inorder.

Answer»

Step-by-step explanation:

1- draw a quadrilateral with the given points taken in order

2-name the quadrilateral as ABCD

3-join ac

4-find out the area of the two triangles abc and adc ..

5-add areas of both triangles ONE will be (-13/2) and other will be (-5/2)

6- after adding the area of quadrilateral will be

-|9| sq.units

Discussion

11.	find the area of a figure formed by joining the midpoint of the adjacent side of a rhombus with diagonals 12 and 16
Answer» Answer: 96 Step-by-step EXPLANATION: formula-ab/2 a-length of ONE diagonal b-length of ANOTHER diagona 12×16/2 =96

11.

find the area of a figure formed by joining the midpoint of the adjacent side of a rhombus with diagonals 12 and 16

Answer»

Answer:

96

Step-by-step EXPLANATION:

formula-ab/2

a-length of ONE diagonal

b-length of ANOTHER diagona

12×16/2

=96

Discussion

12.	the perimeter of isosceles traingle is 30 cm . The length of its congruent sides is 3 cm more than its base. find the lengths of all sides.
Answer» $\blue{\bold{\underline{\underline{Answer:}}}}$ $\green{\tt{\therefore{length\:of\:equal\:sides\:=\:11\:cm}}}$ $\pink{\tt{\therefore{length\:of\:base\:=\:<klux>8</klux>\:cm}}}$ $\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$ Let, The the length of congurent sides of the isosceles triangle be X. The length of base of isosceles triangle be y. According to the first condition, ⇛ x+x+y = 30 ⇛ 2x+y = 30...........(i) According to second condition, ⇛ x = y + 3 ⇛ x - y = 3............(ii) Solving equation (i) and (ii) 2X + $\cancel{y}$ = 30 x - $\cancel{y}$ = 3 $\rule{60}{2}$ ⇛ 3x = 33 ⇛ x = 11 By substituting the VALUE of x = 11 in equation (i) ⇛ 2x + y = 30 ⇛ 2(11) + y = 30 ⇛ 22 + y = 30 ⇛ y = 8

12.

the perimeter of isosceles traingle is 30 cm . The length of its congruent sides is 3 cm more than its base. find the lengths of all sides.

Answer»

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

$\green{\tt{\therefore{length\:of\:equal\:sides\:=\:11\:cm}}}$

$\pink{\tt{\therefore{length\:of\:base\:=\:<klux>8</klux>\:cm}}}$

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

Let,

The the length of congurent sides of the isosceles triangle be X.
The length of base of isosceles triangle be y.

According to the first condition,

⇛ x+x+y = 30

⇛ 2x+y = 30...........(i)

According to second condition,

⇛ x = y + 3

⇛ x - y = 3............(ii)

Solving equation (i) and (ii)

2X + $\cancel{y}$ = 30

x - $\cancel{y}$ = 3

$\rule{60}{2}$

⇛ 3x = 33

⇛ x = 11

By substituting the VALUE of x = 11 in equation (i)

⇛ 2x + y = 30

⇛ 2(11) + y = 30

⇛ 22 + y = 30

⇛ y = 8

Discussion

13.	Factorize: X4+ X2 +1
Answer» ANSWER: is a CORRECTED answer of your PROBLEM

13.

Factorize: X4+ X2 +1

Answer»

ANSWER:

is a CORRECTED answer of your PROBLEM

Discussion

14.	(-3) × (-12) ÷ (-4) + 3 × 6
Answer» Step-by-step EXPLANATION: (-3)×(-12)÷(-4)+3×6 =(-3)×(+3)+18 =(-9)+18 =+9

14.

(-3) × (-12) ÷ (-4) + 3 × 6

Answer»

Step-by-step EXPLANATION:

(-3)×(-12)÷(-4)+3×6

=(-3)×(+3)+18

=(-9)+18

=+9

Discussion

15.	The rational number which is neither positive nor negative is ——————
Answer» Answer: ZERO(0) Step-by-step EXPLANATION: Zero is the RATIONAL NUMBER which is neither POSITIVE nor negetive. Hope It Helps

15.

The rational number which is neither positive nor negative is ——————

Answer»

Answer:

ZERO(0)

Step-by-step EXPLANATION:

Zero is the RATIONAL NUMBER which is neither POSITIVE nor negetive.

Hope It Helps

Discussion

16.	Find the cost of 450 shares of 100 each at the market price of 30.80
Answer» ANSWER: the RIGHT PERSON to CONNECT with you and your FAMILY and friends is Thrillzone you and your family and friends is Thrillzone you and your family and friends is Thrillzone you and your family

16.

Find the cost of 450 shares of 100 each at the market price of 30.80

Answer»

ANSWER:

the RIGHT PERSON to CONNECT with you and your FAMILY and friends is Thrillzone you and your family and friends is Thrillzone you and your family and friends is Thrillzone you and your family

Discussion

17.	What is the circumference of a semicircle if its radius is 3.5cm
Answer» HEY MATE hope it HELPS you... CIRCUMFERENCE of semicircle = πr = 22/7 × 3.5 = 11 cm

17.

What is the circumference of a semicircle if its radius is 3.5cm

Answer»

HEY MATE hope it HELPS you...

CIRCUMFERENCE of semicircle = πr

= 22/7 × 3.5 = 11 cm

Discussion

18.	Please answer fast..........Find the rationalising factor of the following.6√3-4√3
Answer» Answer: i know the answer but firstly REMOVE UR fake dp ok otherwise I'll POST ur id on brainly's QUESTION and bezati HOGI wo alg

18.

Please answer fast..........Find the rationalising factor of the following.6√3-4√3

Answer»

Answer:

i know the answer but firstly REMOVE UR fake dp ok otherwise I'll POST ur id on brainly's QUESTION and bezati HOGI wo alg

Discussion

19.	If 2+3=8, 3+4=15, 4+1=4, 2+5=14 then 10+9?
Answer» Hello.... Here is your ANSWER.... *Here.... 2×3= 6+2=8 3×4= 12+3= 15 So 10×9=90+10 = 100... Hope* *it HELPS... PLEASE* *mark as* *brain liest* *answer*...

19.

If 2+3=8, 3+4=15, 4+1=4, 2+5=14 then 10+9?

Answer»

Hello....

Here is your ANSWER....

Here....

2×3= 6+2=8

3×4= 12+3= 15

So 10×9=90+10 = 100...

Hope it HELPS...

PLEASE mark as brain liest answer...

Discussion

20.	ना नफा ना तोटा या तत्त्वावर धंदा करणाऱ्या भाजी विक्रेत्याकडून एका गिऱ्हाईकाने 350 रू भाजी विकत घेतली व त्याने 2000 रु ची नोट दिली .भाजीवाल्याकडे सुट्टे पैसे नसल्यामुळे त्याने शेजारच्या दुकानातून 2000 रुपयांची मोड आणली व त्यातील 350 रू घेऊन गिऱ्हाईकाला 1650 रू दिले.थोड्या वेळाने शेजारचा दुकानदार भाजीवाल्याला येऊन म्हणाला ही 2000 ची नोट खोटी आहे व तो भाजीवाल्याकडून 2000 रू घेऊन गेला,तर या व्यवहारात भाजीवाल्याला किती रुपये तोटा झाला बघूया कोण Genius आहे
Answer» Answer: Step-by-step EXPLANATION: sun be bakhlandi AGLI baar koi sawal daala hai to ghar aa KE marunga kya KARUNGA

20.

ना नफा ना तोटा या तत्त्वावर धंदा करणाऱ्या भाजी विक्रेत्याकडून एका गिऱ्हाईकाने 350 रू भाजी विकत घेतली व त्याने 2000 रु ची नोट दिली .भाजीवाल्याकडे सुट्टे पैसे नसल्यामुळे त्याने शेजारच्या दुकानातून 2000 रुपयांची मोड आणली व त्यातील 350 रू घेऊन गिऱ्हाईकाला 1650 रू दिले.थोड्या वेळाने शेजारचा दुकानदार भाजीवाल्याला येऊन म्हणाला ही 2000 ची नोट खोटी आहे व तो भाजीवाल्याकडून 2000 रू घेऊन गेला,तर या व्यवहारात भाजीवाल्याला किती रुपये तोटा झाला बघूया कोण Genius आहे

Answer»

Answer:

Step-by-step EXPLANATION:

sun be bakhlandi AGLI baar koi sawal daala hai to ghar aa KE marunga kya KARUNGA

Discussion

21.	-5657 +-8686874546565656675774467And 5576879797554688-+77868(878(54356777
Answer» Answer: HYY dood this is whose no. Is this is a CUSTOMER CARE NUMBER.. please mark as brainliest please FOLLOW me ❤️❤️❤️.

21.

-5657 +-8686874546565656675774467And 5576879797554688-+77868(878(54356777

Answer»

Answer:

HYY dood

this is whose no.

Is this is a CUSTOMER CARE NUMBER..

please mark as brainliest

please FOLLOW me ❤️❤️❤️.

Discussion

22.	Are the whole numbers closed undersubtraction?
Answer» Answer: No, WHOLE NUMBERS are not closed under SUBTRACTION Step-by-step explanation:

22.

Are the whole numbers closed undersubtraction?

Answer»

Answer:

No, WHOLE NUMBERS are not closed under SUBTRACTION

Step-by-step explanation:

Discussion

23.	What is the rational number whose absolute value is 11 by 13
Answer» ANSWER: -11/13 is the RATIONAL number WHOSE absolute VALUE is 11/13. \|-11/13\| = 11/13

23.

What is the rational number whose absolute value is 11 by 13

Answer»

ANSWER:

-11/13 is the RATIONAL number WHOSE absolute VALUE is 11/13.

|-11/13| = 11/13

Discussion

24.	Find the missing term of the series 2A11,4D13,12G17
Answer» Step-by-step EXPLANATION: after the NUMBERS or BETWWEN

24.

Find the missing term of the series 2A11,4D13,12G17

Answer»

Step-by-step EXPLANATION:

after the NUMBERS or BETWWEN

Discussion

25.	5 ………. 37 109 complete the series
Answer» Answer: 25.... ..............................

25.

5 ………. 37 109 complete the series

Answer»

Answer:

25.... ..............................

Discussion

26.	A-1/a=81).a+1/a2).a²-1/a²
Answer» Answer: 1) a-1/a = 8 => (a - 1/a)^2 = 8^2 => a^2 + 1/a^2 - 2 = 64 => a^2 + 1/a^2 = 66 => (a + 1/a + 2) = 68 => (a + 1/a)^2 = 68 => a + 1/a = root 68 2) a^2 - 1/a^2 = (a + 1/a)(a - 1/a) = (root 68)(8) = 8root68 = 16 root 7 HOPE IT HELPS PLS MARK IT AS THE BRAINLIEST AND DO FOLLOW ME

26.

A-1/a=81).a+1/a2).a²-1/a²

Answer»

Answer:

1)

a-1/a = 8

=> (a - 1/a)^2 = 8^2

=> a^2 + 1/a^2 - 2 = 64

=> a^2 + 1/a^2 = 66

=> (a + 1/a + 2) = 68

=> (a + 1/a)^2 = 68

=> a + 1/a = root 68

2)

a^2 - 1/a^2

= (a + 1/a)(a - 1/a)

= (root 68)(8)

= 8root68

= 16 root 7

HOPE IT HELPS

PLS MARK IT AS THE BRAINLIEST

AND DO FOLLOW ME

Discussion

27.	Find125÷(-25)80÷(-5)64÷(-16)(-36)÷(-4)(-201)÷13
Answer» ANSWER: I HOPE it is CORRECT answer FOLLOW me

27.

Find125÷(-25)80÷(-5)64÷(-16)(-36)÷(-4)(-201)÷13

Answer»

ANSWER:

I HOPE it is CORRECT answer

FOLLOW me

Discussion

28.	Multiply (-11)/5 by the reciprocal of (-3)/1
Answer» ANSWER: -11/51/-3=11/15 Step-by-step EXPLANATION:*

28.

Multiply (-11)/5 by the reciprocal of (-3)/1

Answer»

ANSWER:

-11/5*1/-3=11/15

Step-by-step EXPLANATION:

Discussion

29.	If y = c , a constant then find dy/dx
Answer» ANSWER: Rules of calculus - functions of one variable Derivatives: definitions, notation, and rules A derivative is a function which measures the SLOPE. It depends upon x in some way, and is found by differentiating a function of the form y = f (x). When x is substituted into the derivative, the result is the slope of the original function y = f (x). There are many different ways to indicate the operation of differentiation, also known as finding or taking the derivative. The choice of notation depends on the type of function being evaluated and upon personal preference. Suppose you have a general function: y = f(x). All of the following notations can be read as "the derivative of y with respect to x" or less formally, "the derivative of the function." f'(x) f' y' df/dx dy/dx d/dx [f(x)]. [HINT: don't read the last three terms as fractions, read them as an operation. For example, read: " dx/dy = 3x" As: "the function that gives the slope is equal to 3x" Let's try some examples. Suppose we have the function : y = 4x3 + X2 + 3. After applying the rules of differentiation, we end up with the following result: dy/dx = 12x2 + 2x. How do we interpret this? First, decide what part of the original function (y = 4x3 + x2 + 3) you are interested in. For example, suppose you WOULD like to know the slope of y when the variable x takes on a value of 2. Substitute x = 2 into the function of the slope and solve: dy/dx = 12 ( 2 )2 + 2 ( 2 ) = 48 + 4 = 52. Therefore, we have found that when x = 2, the function y has a slope of + 52. Now for the practical part. How do we actually determine the function of the slope? Almost all functions you will see in economics can be differentiated using a fairly short list of rules or formulas, which will be presented in the next several SECTIONS.

29.

If y = c , a constant then find dy/dx

Answer»

ANSWER:

Rules of calculus - functions of one variable

Derivatives: definitions, notation, and rules

A derivative is a function which measures the SLOPE. It depends upon x in some way, and is found by differentiating a function of the form y = f (x). When x is substituted into the derivative, the result is the slope of the original function y = f (x).

There are many different ways to indicate the operation of differentiation, also known as finding or taking the derivative. The choice of notation depends on the type of function being evaluated and upon personal preference.

Suppose you have a general function: y = f(x). All of the following notations can be read as "the derivative of y with respect to x" or less formally, "the derivative of the function."

f'(x) f' y' df/dx dy/dx d/dx [f(x)].

[HINT: don't read the last three terms as fractions, read them as an operation.

For example, read: " dx/dy = 3x"

As: "the function that gives the slope is equal to 3x"

Let's try some examples. Suppose we have the function : y = 4x3 + X2 + 3.

After applying the rules of differentiation, we end up with the following result:

dy/dx = 12x2 + 2x.

How do we interpret this? First, decide what part of the original function (y = 4x3 + x2 + 3) you are interested in. For example, suppose you WOULD like to know the slope of y when the variable x takes on a value of 2. Substitute x = 2 into the function of the slope and solve:

dy/dx = 12 ( 2 )2 + 2 ( 2 ) = 48 + 4 = 52.

Therefore, we have found that when x = 2, the function y has a slope of + 52.

Now for the practical part. How do we actually determine the function of the slope? Almost all functions you will see in economics can be differentiated using a fairly short list of rules or formulas, which will be presented in the next several SECTIONS.

Discussion

30.	Find the l.c.m. of 84,126,288 using common method
Answer» Step-by-step explanation: 84= 2×2×3×7 126=2×3×3×7 288=2×2×2×2×2×3×3 LCM(84,126&288)= 2×2×3×3×7×8= 288 here UR ANSWER.....

30.

Find the l.c.m. of 84,126,288 using common method

Answer»

Step-by-step explanation:

84= 2×2×3×7

126=2×3×3×7

288=2×2×2×2×2×3×3

LCM(84,126&288)= 2×2×3×3×7×8= 288

here UR ANSWER.....

Discussion

31.	Please answer this quick if you get it correct i will mark you brainliest
Answer» Answer: 60 degree . Step-by-step explanation: sum of all sides of triangle= 180 degree. one side = 60 degree means x= 60 degree. and by V.O.A = VERTICALLY OPPOSITE angle , y =60 degree. i hope it HELP you.

31.

Please answer this quick if you get it correct i will mark you brainliest

Answer»

Answer:

60 degree .

Step-by-step explanation:

sum of all sides of triangle= 180 degree.

one side = 60 degree means x= 60 degree. and by V.O.A = VERTICALLY OPPOSITE angle , y =60 degree.

i hope it HELP you.

Discussion

32.	The value of 5÷(-1) does not lie between.
Answer» Answer: 5÷(-1) = -5 Step-by-step EXPLANATION: it will not LIE between 4 and 6

32.

The value of 5÷(-1) does not lie between.

Answer»

Answer:

5÷(-1) = -5

Step-by-step EXPLANATION:

it will not LIE between 4 and 6

Discussion

33.	Slope of the line passing through (-1, -1) and (1, 1) is
Answer» ANSWER: SLOPE ( m ) = 1 Step-by-step explanation: slope of a line passes through two points ( x1,Y1) and ( X2, y2) = (y2-y1) / x2-x1) given points : ( -1,-1 ) and ( 1, 1) => m= [ 1-(-1) ] / [ 1-(-1) ] m= 2/2= 1

33.

Slope of the line passing through (-1, -1) and (1, 1) is

Answer»

ANSWER:

SLOPE ( m ) = 1

Step-by-step explanation:

slope of a line passes through two points ( x1,Y1) and ( X2, y2)

= (y2-y1) / x2-x1)

given points : ( -1,-1 ) and ( 1, 1)

=> m= [ 1-(-1) ] / [ 1-(-1) ]

m= 2/2= 1

Discussion

34.	4by 99 × 9 by 5 × 3by 5 × 4 by 99
Answer» ANSWER: $\frac{16}{9075}$ Step-by-step explanation: According to the QUESTION, we just NEED to simply it, PLEASE check the ATTACHMENT.

34.

4by 99 × 9 by 5 × 3by 5 × 4 by 99

Answer»

ANSWER: $\frac{16}{9075}$

Step-by-step explanation:

According to the QUESTION, we just NEED to simply it,

PLEASE check the ATTACHMENT.

Discussion

35.	Find the missing number in triangle 325=28764=84293=?
Answer» Answer: khud dhund lo Step-by-step EXPLANATION: asi it in google it will TELL you the CORRECT OPTION REPEATED to it

35.

Find the missing number in triangle 325=28764=84293=?

Answer»

Answer:

khud dhund lo

Step-by-step EXPLANATION:

asi it in google it will TELL you the CORRECT OPTION REPEATED to it

Discussion

36.	Simplify 7 square root 2 + 5 square root 8
Answer» ANSWER: Step-by-step EXPLANATION: $7 \sqrt{2} + 5 \sqrt{8} \\$ but $\sqrt{8} = \sqrt{4 * 2} = 2 \sqrt{2}$ ∴ $5 \sqrt{8} = 5 \times 2 \sqrt{2} = 10 \sqrt{2}$ Now, $7 \sqrt{2} + 5 \sqrt{8} \\$ $7 \sqrt{2} + 10 \sqrt{2} = 17 \sqrt{2}$

36.

Simplify 7 square root 2 + 5 square root 8

Answer»

ANSWER:

Step-by-step EXPLANATION:

$7 \sqrt{2} + 5 \sqrt{8} \\$

but $\sqrt{8} = \sqrt{4 * 2} = 2 \sqrt{2}$

∴ $5 \sqrt{8} = 5 \times 2 \sqrt{2} = 10 \sqrt{2}$

Now,

$7 \sqrt{2} + 5 \sqrt{8} \\$

$7 \sqrt{2} + 10 \sqrt{2} = 17 \sqrt{2}$

Discussion

37.	(98)square by using a+b and a-b formula
Answer» Answer: 9604 Step-by-step explanation: (98)square means... ( 100 - 2 )square formula ( a - B ) square = A2 + b2 - 2AB (100)2 + (2)2 - 2×100×2 10000+4-400 10004-400 9604 ANS

37.

(98)square by using a+b and a-b formula

Answer»

Answer:

9604

Step-by-step explanation:

(98)square

means...

( 100 - 2 )square

formula ( a - B ) square = A2 + b2 - 2AB

(100)2 + (2)2 - 2×100×2

10000+4-400

10004-400

9604 ANS

Discussion

38.	Using identity find (3/2pq+2/3qr)(3/2pq-2/3qr)
Answer» ANSWER: (a+b) (a+b) a^2-b^2= 9/4p^2q^2-4/9q^2r^2

38.

Using identity find (3/2pq+2/3qr)(3/2pq-2/3qr)

Answer»

ANSWER:

(a+b) (a+b)

a^2-b^2=

9/4p^2q^2-4/9q^2r^2

Discussion

39.	Use laws of exponents and simplify (2^5)^6×(3^3)^2÷(2^6)^5×(3^2)^3Plzz answer this very urgent
Answer» ANSWER: PLZ FOLLOW me and I will follow you BACK

39.

Use laws of exponents and simplify (2^5)^6×(3^3)^2÷(2^6)^5×(3^2)^3Plzz answer this very urgent

Answer»

ANSWER:

PLZ FOLLOW me and I will follow you BACK

Discussion

40.	What is the effect on finding mean of 20 scores if one of them is copied as 73 for 37 wrongly
Answer» We have to find the EFFECT on finding MEAN of 20 scores if one of them is copied as 73 for 37 wrongly. solution : one of the observations is copied as 73 for 37 wrongly. so the true value of the observation is 37. true mean = (sum of 19 observations + 37)/20 and false value of the observation is 73. so false mean = (sum of 19 observations + 73)/20 so the effect on finding means = false mean - true mean = (sum of 19 observations + 73)/20 - (sum of 19 observations + 37)/20 = (73 - 37)/20 = 36/20 = 1.8 hence, if m is mean of 20 observations, after mistake, it will be (m + 1.8) THEREFORE mean of 20 scores if one of them is copied as 73 for 37 wrongly , is increased by 1.8 also read similar QUESTIONS : The mean or 20 observations was 60. It was detected on rechecking that the value of 125 wrongly copied as 25 for computa... brainly.in/question/10874000 in a class test, the mean marks scored by a class of 40 students was calculated as 18.2. later on, it was detected that ... brainly.in/question/8954182

40.

What is the effect on finding mean of 20 scores if one of them is copied as 73 for 37 wrongly

Answer»

We have to find the EFFECT on finding MEAN of 20 scores if one of them is copied as 73 for 37 wrongly.

solution : one of the observations is copied as 73 for 37 wrongly.

so the true value of the observation is 37.

true mean = (sum of 19 observations + 37)/20

and false value of the observation is 73.

so false mean = (sum of 19 observations + 73)/20

so the effect on finding means = false mean - true mean

= (sum of 19 observations + 73)/20 - (sum of 19 observations + 37)/20

= (73 - 37)/20

= 36/20

= 1.8

hence, if m is mean of 20 observations, after mistake, it will be (m + 1.8)

THEREFORE mean of 20 scores if one of them is copied as 73 for 37 wrongly , is increased by 1.8

also read similar QUESTIONS : The mean or 20 observations was 60. It was detected on rechecking that the value of 125

wrongly copied as 25 for computa...

brainly.in/question/10874000

in a class test, the mean marks scored by a class of 40 students was calculated as 18.2. later on, it was detected that ...

brainly.in/question/8954182

Discussion

41.	If x = 3−√132, what is the value of x2+ 1/x2
Answer» Heya ☺ Given that x = 2 + √3 1/x = 1/2 + √3 = 1 × (2 - √3)/(2 + √3) (2 - √3) = (2 - √3)/(2^2 - √3^2) = (2 - √3)/4 - 3 = (2 - √3) THEREFORE , x^2 = (2 + √3) = (2)^2 + (√3)^2 + 2 × 2 × √3 = 4 + 3 + 4√3 = 7 + 4√3 1/x^2 = (2 - √3)^2 = (2)^2 + (√3)^2 - 2 × 2 × √3 = 4 + 3 - 4√3 = 7 - 4√3 x^2 + 1/x^2 = (7 + 4√3) + (7 - 4√3) = 7 + 4√3 + 7 - 4√3 = 7 + 7 + 4√3 - 4√3 = 14 hope it helps you ..... mark as brainiest.......

41.

If x = 3−√132, what is the value of x2+ 1/x2

Answer»

Heya ☺

Given that

x = 2 + √3

1/x = 1/2 + √3

= 1 × (2 - √3)/(2 + √3) (2 - √3)

= (2 - √3)/(2^2 - √3^2)

= (2 - √3)/4 - 3

= (2 - √3)

THEREFORE ,

x^2 = (2 + √3)

= (2)^2 + (√3)^2 + 2 × 2 × √3

= 4 + 3 + 4√3

= 7 + 4√3

1/x^2 = (2 - √3)^2

= (2)^2 + (√3)^2 - 2 × 2 × √3

= 4 + 3 - 4√3

= 7 - 4√3

x^2 + 1/x^2

= (7 + 4√3) + (7 - 4√3)

= 7 + 4√3 + 7 - 4√3

= 7 + 7 + 4√3 - 4√3

= 14

hope it helps you .....

mark as brainiest.......

Discussion

42.	A man travels 1/5 of his journey by train, 5/7 of it by bus and walks the rest of the distance.
Answer» ANSWER: Step-by-step explanation:1/5+5/7 7+25/35 34/35 34/35 is the DISTANCE he WALKED

42.

A man travels 1/5 of his journey by train, 5/7 of it by bus and walks the rest of the distance.

Answer»

ANSWER:

Step-by-step explanation:1/5+5/7

7+25/35

34/35

34/35 is the DISTANCE he WALKED

Discussion

43.	A card is drawn from a pack bearing numbers from 1 to 25
Answer» 25 SAMPLE POINTS from 1 to 25

43.

A card is drawn from a pack bearing numbers from 1 to 25

Answer»

25 SAMPLE POINTS from 1 to 25

Discussion

44.	Solve the following questions.......don't spam ......❌⭕❌❗❗
Answer» 5. If two lines intersect each other, then they are not parallel. Therefore their slopes should not be same. The slope of the line $4x+py+8=0$ is, $\longrightarrow m_1=-\dfrac{<klux>4</klux>}{p}$ And the slope of the line $2x+2y+2=0$ is, $\longrightarrow m_2=-\dfrac{2}{2}$ $\longrightarrow m_2=-1$ For the two lines intersect each other, $\longrightarrow m_1\neq m_2$ $\longrightarrow -\dfrac{4}{p}\neq-1$ $\longrightarrow \underline{\underline{p\neq4}}$ Hence, $\longrightarrow \underline{\underline{p\in\mathbb{R}-\{4\}}}$ 6. For the two lines being coincident, the two equations should be the same. Given equations are, $2\alpha x+(\alpha+\beta)y=28\quad\quad\dots(1)$ $2x+3y=7\quad\quad\dots(2)$ Multiplying (2) by 4, $8x+12y=28\quad\quad\dots(<klux>3</klux>)$ And on comparing LHS of (1) and (3), since RHS are same, $\longrightarrow 2\alpha=8$ $\longrightarrow\underline{\underline{\alpha=4}}$ And, $\longrightarrow \alpha+\beta=12$ $\longrightarrow 4+\beta=12$ $\longrightarrow \underline{\underline{\beta=8}}$ 7. (i) For a unique solution, the lines represented by these two equations should not be parallel, hence their slopes should not be same. The slope of the line $x+2y-5=0$ is, $\longrightarrow m_1=-\dfrac{1}{2}$ And that of $3x+ky-15=0$ is, $\longrightarrow m_2=-\dfrac{3}{k}$ Then we have, $\longrightarrow m_1\neq m_2$ $\longrightarrow -\dfrac{1}{2}\neq-\dfrac{3}{k}$ $\longrightarrow \underline{\underline{k\neq6}}$ Therefore, $\longrightarrow\underline{\underline{k\in\mathbb{R}-\{6\}}}$ 7. (ii) For $k=6,$ the system would have infinite no. of solutions because the lines BECOME coincident. Therefore there are no values for k, for the system having no solution. 8. (i) For no solutions, the lines represented by these two lines should be parallel to each other, hence their slopes should be same. The slope of the line $px+3y-3=0$ is, $\longrightarrow m_1=-\dfrac{p}{3}$ And that of the line $12x+py-6=0$ is, $\longrightarrow m_2=-\dfrac{12}{p}$ For the two being parallel, $\longrightarrow m_1=m_2$ $\longrightarrow -\dfrac{p}{3}=-\dfrac{12}{p}$ $\Longrightarrow\underline{\underline{p=-6}}$ The reason for $p\neq6$ here is given below. 8. (ii) For infinite solutions, the lines should be coincident. Hence the equations should be the same. The equations are, $px+3y=3\quad\quad\dots(1)$ $12x+py=6\quad\quad\dots(2)$ Multiplying (1) by 2, $2px+6y=6\quad\quad\dots(3)$ And on comparing (2) and (3), we get, $\longrightarrow\underline{\underline{p=6}}$ I.e., the system has no solutions only if $p=-6.$ And the system has infinite solutions only if $p=6.$

44.

Solve the following questions.......don't spam ......❌⭕❌❗❗

Answer»

5. If two lines intersect each other, then they are not parallel. Therefore their slopes should not be same.

The slope of the line $4x+py+8=0$ is,

$\longrightarrow m_1=-\dfrac{<klux>4</klux>}{p}$

And the slope of the line $2x+2y+2=0$ is,

$\longrightarrow m_2=-\dfrac{2}{2}$

$\longrightarrow m_2=-1$

For the two lines intersect each other,

$\longrightarrow m_1\neq m_2$

$\longrightarrow -\dfrac{4}{p}\neq-1$

$\longrightarrow \underline{\underline{p\neq4}}$

Hence,

$\longrightarrow \underline{\underline{p\in\mathbb{R}-\{4\}}}$

6. For the two lines being coincident, the two equations should be the same.

Given equations are,

$2\alpha x+(\alpha+\beta)y=28\quad\quad\dots(1)$

$2x+3y=7\quad\quad\dots(2)$

Multiplying (2) by 4,

$8x+12y=28\quad\quad\dots(<klux>3</klux>)$

And on comparing LHS of (1) and (3), since RHS are same,

$\longrightarrow 2\alpha=8$

$\longrightarrow\underline{\underline{\alpha=4}}$

And,

$\longrightarrow \alpha+\beta=12$

$\longrightarrow 4+\beta=12$

$\longrightarrow \underline{\underline{\beta=8}}$

7. (i) For a unique solution, the lines represented by these two equations should not be parallel, hence their slopes should not be same.

The slope of the line $x+2y-5=0$ is,

$\longrightarrow m_1=-\dfrac{1}{2}$

And that of $3x+ky-15=0$ is,

$\longrightarrow m_2=-\dfrac{3}{k}$

Then we have,

$\longrightarrow m_1\neq m_2$

$\longrightarrow -\dfrac{1}{2}\neq-\dfrac{3}{k}$

$\longrightarrow \underline{\underline{k\neq6}}$

Therefore,

$\longrightarrow\underline{\underline{k\in\mathbb{R}-\{6\}}}$

7. (ii) For $k=6,$ the system would have infinite no. of solutions because the lines BECOME coincident. Therefore there are no values for k, for the system having no solution.

8. (i) For no solutions, the lines represented by these two lines should be parallel to each other, hence their slopes should be same.

The slope of the line $px+3y-3=0$ is,

$\longrightarrow m_1=-\dfrac{p}{3}$

And that of the line $12x+py-6=0$ is,

$\longrightarrow m_2=-\dfrac{12}{p}$

For the two being parallel,

$\longrightarrow m_1=m_2$

$\longrightarrow -\dfrac{p}{3}=-\dfrac{12}{p}$

$\Longrightarrow\underline{\underline{p=-6}}$

The reason for $p\neq6$ here is given below.

8. (ii) For infinite solutions, the lines should be coincident. Hence the equations should be the same.

The equations are,

$px+3y=3\quad\quad\dots(1)$

$12x+py=6\quad\quad\dots(2)$

Multiplying (1) by 2,

$2px+6y=6\quad\quad\dots(3)$

And on comparing (2) and (3), we get,

$\longrightarrow\underline{\underline{p=6}}$

I.e., the system has no solutions only if $p=-6.$ And the system has infinite solutions only if $p=6.$

Discussion

45.	Find the coordinates of the midpoint of the line segment joining the points A(-11, -8) and B(8,-2)
Answer» now, midpoint formulae: (x1+x2)/2,( y1+y2)/2 here, a(-11,-8)=x1y1 b(8,-2)=x2y2 then,SUBSTITUTE values: (-11+(8))/2, -8+(-2)/2 (-3/2,-10/2) i.e., (simplify 10/5) (-3/2,-5) are the COORDINATES.

45.

Find the coordinates of the midpoint of the line segment joining the points A(-11, -8) and B(8,-2)

Answer»

now, midpoint formulae: (x1+x2)/2,( y1+y2)/2

here,

a(-11,-8)=x1y1

b(8,-2)=x2y2

then,SUBSTITUTE values:

(-11+(8))/2, -8+(-2)/2

(-3/2,-10/2) i.e., (simplify 10/5)

(-3/2,-5) are the COORDINATES.

Discussion

46.	If alpha and bitta are zeros of x²-4x+1 then find 1/ alpha+1/ bitta-alpha.bitta?
Answer» ANSWER: PLEASE CHECK your QUESTION

46.

If alpha and bitta are zeros of x²-4x+1 then find 1/ alpha+1/ bitta-alpha.bitta?

Answer»

ANSWER:

PLEASE CHECK your QUESTION

Discussion

47.	(98)square
Answer» ANSWER: PLEASE MARK as brainliest Step-by-step EXPLANATION: Answer is NOTHING

47.

(98)square

Answer»

ANSWER:

PLEASE MARK as brainliest

Step-by-step EXPLANATION:

Answer is NOTHING

Discussion

48.	How many thousand in 1780535
Answer» Step-by-step explanation: not EVEN a thousand. OK right or WRONG

48.

How many thousand in 1780535

Answer»

Step-by-step explanation:

not EVEN a thousand. OK right or WRONG

Discussion

49.	Mr. Kamal Kishor Sharma spends 20% of his income on house rent , 30% on food, and 10% for his children's education. He saves 25% while the remaining is used for other expenses. Draw the pie chart for his total income.
Answer» Answer income on HOUSE rent=20% 20/100360=72degree food=30% =30/100360=108degree children's education=10% =10/100360 =36degree his savings=25% =25/100360 =90degree other expenses=360-306 =54 DEGREE

49.

Mr. Kamal Kishor Sharma spends 20% of his income on house rent , 30% on food, and 10% for his children's education. He saves 25% while the remaining is used for other expenses. Draw the pie chart for his total income.

Answer»

Answer

income on HOUSE rent=20%

20/100*360=72degree

food=30%

=30/100*360=108degree

children's education=10%

=10/100*360

=36degree

his savings=25%

=25/100*360

=90degree

other expenses=360-306

=54 DEGREE

Discussion

50.	Find 3 different irrational numbers between 5/7 and 9/11
Answer» FIRST multiply 5\7 and 9\11 L 5/7 11 9/11 7 THat was 55\77 63\77 so in these RATIONAL NUMBER you can find the more rational number between

50.

Find 3 different irrational numbers between 5/7 and 9/11

Answer»

FIRST multiply 5\7 and 9\11 L

5/7 *11

9/11 *7

THat was

55\77

63\77

so in these RATIONAL NUMBER you can find the more rational number between

Discussion

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Chapter determinant question6

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If you do these two question i will mark you brainliest today and tmr

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9604

9604 ANS

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If x = 3−√132, what is the value of x2+ 1/x2

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Find the coordinates of the midpoint of the line segment joining the points A(-11, -8) and B(8,-2)​

If alpha and bitta are zeros of x²-4x+1 then find 1/ alpha+1/ bitta-alpha.bitta?​

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Mr. Kamal Kishor Sharma spends 20% of his income on house rent , 30% on food, and 10% for his children's education. He saves 25% while the remaining is used for other expenses. Draw the pie chart for his total income.​

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What is the correct sequence of 1,2.65,4.3,5.95,7.6

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find the area of a figure formed by joining the midpoint of the adjacent side of a rhombus with diagonals 12 and 16

the perimeter of isosceles traingle is 30 cm . The length of its congruent sides is 3 cm more than its base. find the lengths of all sides.

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Use laws of exponents and simplify (2^5)^6×(3^3)^2÷(2^6)^5×(3^2)^3Plzz answer this very urgent

What is the effect on finding mean of 20 scores if one of them is copied as 73 for 37 wrongly

A man travels 1/5 of his journey by train, 5/7 of it by bus and walks the rest of the distance.

Solve the following questions.......don't spam ......❌⭕❌❗❗

Find the coordinates of the midpoint of the line segment joining the points A(-11, -8) and B(8,-2)

If alpha and bitta are zeros of x²-4x+1 then find 1/ alpha+1/ bitta-alpha.bitta?

(98)square

How many thousand in 1780535

Mr. Kamal Kishor Sharma spends 20% of his income on house rent , 30% on food, and 10% for his children's education. He saves 25% while the remaining is used for other expenses. Draw the pie chart for his total income.