332354 + Interview Questions in Secondary School in Math

1.	3. Prove that the following are irrationals: (1) 1/undeeroot2(ii) 7/underroot5(iii)6+underroot2
Answer» 2 1 Let us assume 2 1 is rational. So we can write this number as 2 1 = b a ---- (1) Here, a and b are two co-prime numbers and b is not equal to zero. Simplify the equation (1) multiply by 2 both sides, we get 1= b a 2 Now, divide by b, we get b=a 2 or a b = 2 Here, a and b are integers so, a b is a rational number, so 2 should be a rational number. But 2 is a irrational number, so it is contradictory. Therefore, 2 1 is irrational number. (ii) 7 5 Let us assume 7 5 is rational. So, we can write this number as 7 5 = b a ---- (1) Here, a and b are two co-prime numbers and b is not equal to zero. Simplify the equation (1) divide by 7 both sides, we get 5 = 7b a Here, a and b are integers, so 7b a is a rational number, so 5 should be a rational number. But 5 is a irrational number, so it is contradictory. Therefore, 7 5 is irrational number. (iii) 6+ 2 Let us assume 6+ 2 is rational. So we can write this number as 6+ 2 = b a ---- (1) Here, a and b are two co-prime number and b is not equal to zero. Simplify the equation (1) subtract 6 on both sides, we get 2 = b a −6 2 = b a−6b Here, a and b are integers so, b a−6b is a rational number, so 2 should be a rational number. But 2 is a irrational number, so it is contradictory. Therefore, 6+ 2 is irrational number

1.

3. Prove that the following are irrationals: (1) 1/undeeroot2(ii) 7/underroot5(iii)6+underroot2

Answer»

2

1

Let us assume

2

1

is rational.

So we can write this number as

2

1

=

b

a

---- (1)

Here, a and b are two co-prime numbers and b is not equal to zero.

Simplify the equation (1) multiply by

2

both sides, we get

1=

b

a

2

Now, divide by b, we get

b=a

2

or

a

b

=

2

Here, a and b are integers so,

a

b

is a rational number,

so

2

should be a rational number.

But

2

is a irrational number, so it is contradictory.

Therefore,

2

1

is irrational number.

(ii) 7

5

Let us assume 7

5

is rational.

So, we can write this number as

7

5

=

b

a

---- (1)

Here, a and b are two co-prime numbers and b is not equal to zero.

Simplify the equation (1) divide by 7 both sides, we get

5

=

7b

a

Here, a and b are integers, so

7b

a

is a rational

number, so

5

should be a rational number.

But

5

is a irrational number, so it is contradictory.

Therefore, 7

5

is irrational number.

(iii) 6+

2

Let us assume 6+

2

is rational.

So we can write this number as

6+

2

=

b

a

---- (1)

Here, a and b are two co-prime number and b is not equal to zero.

Simplify the equation (1) subtract 6 on both sides, we get

2

=

b

a

−6

2

=

b

a−6b

Here, a and b are integers so,

b

a−6b

is a rational

number, so

2

should be a rational number.

But

2

is a irrational number, so it is contradictory.

Therefore, 6+

2

is irrational number

Discussion

2.	PARTA1) Write one solution for the equation 2y + 3x - 9
Answer» ONG>ANSWER: x=3 and y=0 x=0 and y=9/2

2.

PARTA1) Write one solution for the equation 2y + 3x - 9

Answer» ONG>ANSWER:

x=3 and y=0

x=0 and y=9/2

Discussion

3.	If shopkeeper has 10 mangoes. he gave the 5 mangoes to a man and 3 mangoes 2 a lady and a shopkeeper get again 20 mangoes and he gave 10 mangoes to another shopkeeper and 4 mangoes to a kid how many mangoes did he have now?tough but simple
Answer» IX) is the ANSWER Step-by-step EXPLANATION: he have 6 MANGOES

3.

If shopkeeper has 10 mangoes. he gave the 5 mangoes to a man and 3 mangoes 2 a lady and a shopkeeper get again 20 mangoes and he gave 10 mangoes to another shopkeeper and 4 mangoes to a kid how many mangoes did he have now?tough but simple

Answer» IX) is the ANSWER

Step-by-step EXPLANATION:

he have 6 MANGOES

Discussion

4.	It takes 2 hour for 6 pipes to fill a tank. How much time will be needed to fill 10 such tanks if 12 pipes are used ?
Answer» ong>Step-by-step explanation: 6 PIPES fill tank in 2 hrs 1 PIPE fill tank in 6×2 hrs 12 pipe fill tank in 6×2/12 hrs = 1 hour time taken for 12 pipes to fill 10 tanks = 10 × 1= 10 hrs

4.

It takes 2 hour for 6 pipes to fill a tank. How much time will be needed to fill 10 such tanks if 12 pipes are used ?

Answer»

ong>Step-by-step explanation:

6 PIPES fill tank in 2 hrs

1 PIPE fill tank in 6×2 hrs

12 pipe fill tank in 6×2/12 hrs

= 1 hour

time taken for 12 pipes to fill 10 tanks = 10 × 1= 10 hrs

Discussion

5.	निम्नलिखित पूण घन संख्या आकलन द्वारा ज्ञात करें 4913
Answer» ong>Answer: 4913 के लिए: 4913 के घन मूल के इकाई स्थान पर 7 है, क्योंकि 3 से समाप्त होने वाली संख्याओं के घनमूल का इकाई अंक 7 होता है। 4913 के दाएँ से तीन स्थान चलने पर हमें 4 प्राप्त होता है क्योंकि 13 = 1, और 23 = 8 अत: 13 < 4 <23. अत:, 4913 के घनमूल का दहाई अंक 1 होगा।

5.

निम्नलिखित पूण घन संख्या आकलन द्वारा ज्ञात करें 4913

Answer»

ong>Answer:

4913 के लिए:

4913 के घन मूल के इकाई स्थान पर 7 है, क्योंकि 3 से समाप्त होने वाली संख्याओं के घनमूल का इकाई अंक 7 होता है। 4913 के दाएँ से तीन स्थान चलने पर हमें 4 प्राप्त होता है क्योंकि 13 = 1, और 23 = 8 अत: 13 < 4 <23. अत:, 4913 के घनमूल का दहाई अंक 1 होगा।

Discussion

6.	(25) Use Euclis division algorithm to find the H.C.F. of 847 and 2160.
Answer» ONG>SEE ATTACHED PICTURE ⤴ $\sf\blue{hope \: this \: helps \: you!! \: }$ @Mahor2111

6.

(25) Use Euclis division algorithm to find the H.C.F. of 847 and 2160.

Answer» ONG>SEE ATTACHED PICTURE ⤴

$\sf\blue{hope \: this \: helps \: you!! \: }$

@Mahor2111

Discussion

7.	What is the difference netween batter system and number system?
Answer» ONG>Answer: The PRIMARY difference between BARTER and currency systems is that a currency system uses an agreed-upon form of paper or COIN money as an exchange system rather than directly TRADING goods and services through bartering

Discussion

8.	You have two pipes P1 and P2 that can fill a large bucket in 4 hours and 2 hours, respectively and you open the pipes at alternate hours. In the give context, how many hours will it take to fill the bucket if you open P1 first?
Answer» hours FIRST HOUR- 1/4 of the BUCKET is filled Second hour- 1/4+1/2 bucket is filled = 3/4 bucket is filled Third hour 1/4 is LEFT which is filled by P1.

Discussion

9.	. A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30minutes, the tank is filled in 40 minutes. The pipe B canalone fill the tank in(a) 45 mints (b) 60 mints (c) 75 mints (d) 90 mints
Answer» ong>ANSWER: 90 MINTS is the answer mark me as a BRINLIEST

9.

. A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30minutes, the tank is filled in 40 minutes. The pipe B canalone fill the tank in(a) 45 mints (b) 60 mints (c) 75 mints (d) 90 mints

Answer»

ong>ANSWER:

90 MINTS

is the answer

mark me as a BRINLIEST

Discussion

10.	У роппо 10.wigile5))Find the distance between the points R(0, - 3) and S
Answer» ong>ANSWER: don't KNOW what is the answer Step-by-step explanation: SORRY for that

10.

У роппо 10.wigile5))Find the distance between the points R(0, - 3) and S

Answer»

ong>ANSWER:

don't KNOW what is the answer

Step-by-step explanation:

SORRY for that

Discussion

11.	Please answer fastspammers will be reported
Answer» ONG>Answer: 1=c 2=b 3=b Step-by-step EXPLANATION: MAY it will HELP you

11.

Please answer fastspammers will be reported

Answer» ONG>Answer:

1=c

2=b

3=b

Step-by-step EXPLANATION:

MAY it will HELP you

Discussion

12.	Please give me answers now
Answer» ong>ANSWER: Its too blur Step-by-step explanation: Meaning kuchh pata nahi chal RAHA

12.

Please give me answers now

Answer»

ong>ANSWER:

Its too blur

Step-by-step explanation:

Meaning kuchh pata nahi chal RAHA

Discussion

13.	सुतारपक्षाCrow(को) काव-Peacock(पिकॉक) मोर
Answer» ONG>ANSWER: Step-by-step EXPLANATION:

13.

सुतारपक्षाCrow(को) काव-Peacock(पिकॉक) मोर

Answer» ONG>ANSWER:

Step-by-step EXPLANATION:

Discussion

14.	Find the value of x in : \|x+3\|-\|x\|=3
Answer» ong>Answer: Let mod (x-2) = A & mod ( x-3) = B, both A& B are positive. And since A + B = 1 So A & B can hold values from 0 to 1 ie 0 < ,= A <,=1 Also, 0 < , = B < , = 1 => 0 < mod (x - 2) < 1 ……………..(1) And 0 < mod ( x-3) < 1 ……………(2) => x-2 = 0 through 1 ( by (1) => x = 2 through 3 ●●●●●●●(3) Now, x-3 = 0 through 1 => x = 3 through 4 ●●●●●●●●(4) Now we select the values of x from ●●●(3) & ●●●(4) , which satisfy EQUATIONS …(1) & ….(2) both And those are x = 2 through 3 ie, 2 <,= x <,= 3 So, values of x are all real numbers LYING between 2 & 3 , INCLUDING 2 & 3. Step-by-step explanation:

14.

Find the value of x in : |x+3|-|x|=3

Answer»

ong>Answer:

Let mod (x-2) = A & mod ( x-3) = B, both A& B are positive.

And since A + B = 1

So A & B can hold values from 0 to 1

ie 0 < ,= A <,=1

Also, 0 < , = B < , = 1

=> 0 < mod (x - 2) < 1 ……………..(1)

And 0 < mod ( x-3) < 1 ……………(2)

=> x-2 = 0 through 1 ( by (1)

=> x = 2 through 3 ●●●●●●●(3)

Now, x-3 = 0 through 1

=> x = 3 through 4 ●●●●●●●●(4)

Now we select the values of x from ●●●(3) & ●●●(4) , which satisfy EQUATIONS …(1) & ….(2) both

And those are

x = 2 through 3

ie, 2 <,= x <,= 3

So, values of x are all real numbers LYING between 2 & 3 , INCLUDING 2 & 3.

Step-by-step explanation:

Discussion

15.	In Find the values of a and b from the quadratic equation 2x2 - 5 + 7 = 0 ill) Find X, if fixi = 252 and fi = 420,
Answer» ONG>Answer: Given 2x 2 −5x+7=0 The standard QUADRATIC equation is ax 2 +bx+c=0 by COMPARING we GET a=2,b=−5,c=−7 ∴ a=2,b=

15.

In Find the values of a and b from the quadratic equation 2x2 - 5 + 7 = 0 ill) Find X, if fixi = 252 and fi = 420,

Answer» ONG>Answer:

Given 2x

2

−5x+7=0

The standard QUADRATIC equation is ax

2

+bx+c=0

by COMPARING we GET a=2,b=−5,c=−7

∴ a=2,b=

Discussion

16.	Solve this question.
Answer» ONG>ANSWER: MARK as brilliant Step-by-step EXPLANATION: $\frac{2 \times {3}^{4} \times {2}^{5} }{ {3}^{2} \times ( { {2}^{2} })^{2} } = \frac{ {2}^{6} \times {3}^{4} }{ {2}^{4} \times {3}^{2} }$ $= \frac{ {2}^{6} }{ {2}^{4} } \times \frac{ {3}^{4} }{ {3}^{2} }$ $= {2}^{6 - 4} \times {3}^{4 - 2}$ $= {2}^{2} \times {3}^{2}$ $= 4 \times 9$ $= 36$

16.

Solve this question.

Answer» ONG>ANSWER:

MARK as brilliant

Step-by-step EXPLANATION:

$\frac{2 \times {3}^{4} \times {2}^{5} }{ {3}^{2} \times ( { {2}^{2} })^{2} } = \frac{ {2}^{6} \times {3}^{4} }{ {2}^{4} \times {3}^{2} }$

$= \frac{ {2}^{6} }{ {2}^{4} } \times \frac{ {3}^{4} }{ {3}^{2} }$

$= {2}^{6 - 4} \times {3}^{4 - 2}$

$= {2}^{2} \times {3}^{2}$

$= 4 \times 9$

$= 36$

Discussion

17.	Classify thegiren sumberrational 7. 474747.. And1.10100100010001...
Answer» ong>Step-by-step EXPLANATION: SINCE the DECIMAL expansion is non-terminating and non-recurring. Hence, 1.101001000100001... is an irrational NUMBER

17.

Classify thegiren sumberrational 7. 474747.. And1.10100100010001...

Answer»

ong>Step-by-step EXPLANATION:

SINCE the DECIMAL expansion is non-terminating and non-recurring.

Hence, 1.101001000100001... is an irrational NUMBER

Discussion

18.	Simplify:2x34x232x (22) solutions
Answer» ONG>ANSWER: I don't KNOW Step-by-step EXPLANATION: sorryyyyyy

18.

Simplify:2x34x232x (22) solutions

Answer» ONG>ANSWER:

I don't KNOW

Step-by-step EXPLANATION:

sorryyyyyy

Discussion

19.	5) Find real root of given equation by using bisection method if f(x) = x^2 -logx-12 in (3,4) upto four iteration
Answer» ONG>ANSWER: bsbsbansvsbssnsbsjjsnjssj

Discussion

20.	A ki power 4 x5a41 x2a5
Answer» 46 is the CORECT ANSWER

Discussion

21.	find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients. (I) x²+2x+3
Answer» ong>Answer: We have x2+2x +3 x2+3x+(-x+3) x2+3x-x+3 x(x+3)-1(x+3) (x-1)(x+3) x=1andx=(-3) So,the zeroes are 1 and -3 Relationships between the zeroes and the Coefficient SUM of the zeroes =(-b÷a) (a+b) 1+-3 =(-2÷1) =-2 =-2 Product of Zeroes =Constant term÷Coefficientofx2 ab 1×-3 = -3÷1 =-3. =-3 Thus,the relationships between the zeroes and the coefficient of the polynomial x2+2x+3 is verified Step-by-step explanation: PLEASE mark it as a brainlest!

21.

find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients. (I) x²+2x+3

Answer»

ong>Answer:

We have x2+2x +3

x2+3x+(-x+3)

x2+3x-x+3

x(x+3)-1(x+3)

(x-1)(x+3)

x=1andx=(-3)

So,the zeroes are 1 and -3

Relationships between the zeroes and the Coefficient

SUM of the zeroes =(-b÷a)

(a+b)

1+-3 =(-2÷1)

=-2 =-2

Product of Zeroes =Constant term÷Coefficientofx2

ab

1×-3 = -3÷1

=-3. =-3

Thus,the relationships between the zeroes and the coefficient of the polynomial x2+2x+3 is verified

Step-by-step explanation:

PLEASE mark it as a brainlest!

Discussion

22.	In Find the values of a and b from the quadratic equation 2x2 - 5x + 7 = 0 ill) Find, if fixi = 252 and Efi = 420.iv) If for an A. P. d = 10. What is the value of to - ty?
Answer» ong>Answer: Given 2X 2 −5x+7=0 The standard quadratic EQUATION is ax 2 +bx+c=0 by comparing we GET a=2,b=−5,c=−7 ∴ a=2,b=−5

22.

In Find the values of a and b from the quadratic equation 2x2 - 5x + 7 = 0 ill) Find, if fixi = 252 and Efi = 420.iv) If for an A. P. d = 10. What is the value of to - ty?

Answer»

ong>Answer:

Given 2X

2

−5x+7=0

The standard quadratic EQUATION is ax

2

+bx+c=0

by comparing we GET a=2,b=−5,c=−7

∴ a=2,b=−5

Discussion

23.	A car covers 2/3rd of total distance with 1.5 times of its original speed and rest distance with its original speed. If the original speed of car is 70 kmph, then find the average speed of the car throughout the wholejourney.?
Answer» ONG>ANSWER: TOTAL distance=X if FIRST 2/3rd with SPEED of 105=2x/315 next 1/3rd 70=X/210

23.

A car covers 2/3rd of total distance with 1.5 times of its original speed and rest distance with its original speed. If the original speed of car is 70 kmph, then find the average speed of the car throughout the wholejourney.?

Answer» ONG>ANSWER:

TOTAL distance=X

if FIRST 2/3rd with SPEED of 105=2x/315

next 1/3rd 70=X/210

Discussion

24.	Find the sum of (i) (+7) + (−11) (ii) (−13) + (−10)
Answer» $(i) + 7 + (- 11) \\ = - 4 \\ \\ (ii) - 13 + ( - 10) \\ = - 23$

24.

Find the sum of (i) (+7) + (−11) (ii) (−13) + (−10)

Answer»

$(i) + 7 + (- 11) \\ = - 4 \\ \\ (ii) - 13 + ( - 10) \\ = - 23$

Discussion

25.	Now group the terms 72.3 + (-39.1) = 70 + 2 + 0.3 + (-30) + (-9) + (-0.1) in the expression in part C using the Associative Property.
Answer» ONG>ANSWER: $72.3 + (-39.1) = 70 + 2 + 0.3 + (-30) + (-9) + (-0.1) \\ = > 33.2 = 33.2 \\ \\ lhs = rhs$

25.

Now group the terms 72.3 + (-39.1) = 70 + 2 + 0.3 + (-30) + (-9) + (-0.1) in the expression in part C using the Associative Property.

Answer» ONG>ANSWER:

$72.3 + (-39.1) = 70 + 2 + 0.3 + (-30) + (-9) + (-0.1) \\ = > 33.2 = 33.2 \\ \\ lhs = rhs$

Discussion

26.	10. With the help of the following numbers show that: H.C.F. L.C.M. = First number x Second number:(a) 16, 24(b) 30, 45
Answer» ong>ANSWER: PLEASE Step-by-step EXPLANATION: please GIVE me braininlist

26.

10. With the help of the following numbers show that: H.C.F. L.C.M. = First number x Second number:(a) 16, 24(b) 30, 45

Answer»

ong>ANSWER:

PLEASE

Step-by-step EXPLANATION:

please GIVE me braininlist

Discussion

27.	The equation x3 - 12x +39x - 28 = 0 whose roots are in the b) G.P.c) H.Pd) Nonea) A.P
Answer» ONG>Answer: I am in 5 Step-by-step explanation: CLASS SORRY I didn't KNOW

27.

The equation x3 - 12x +39x - 28 = 0 whose roots are in the b) G.P.c) H.Pd) Nonea) A.P

Answer» ONG>Answer:

I am in 5

Step-by-step explanation:

CLASS SORRY I didn't KNOW

Discussion

28.	Estimate each sums to the nearest ten 62 65
Answer» ong>Answer: 92 is answer Step-by-step explanation: only this TIME has 92 OK so answer is 92

28.

Estimate each sums to the nearest ten 62 65

Answer»

ong>Answer:

92 is answer

Step-by-step explanation:

only this TIME has 92 OK so answer is 92

Discussion

29.	Sin theta / cot theta + cosec theta-sin theta/ cot theta - cosec theta
Answer» ONG>Answer: 2 Step-by-step EXPLANATION:

29.

Sin theta / cot theta + cosec theta-sin theta/ cot theta - cosec theta

Answer» ONG>Answer:

2

Step-by-step EXPLANATION:

Discussion

30.	4. If the area of a rectangle is 30 sq.m and the length is 6m, then the breadth is ………….. (a) 6m (b) 5m (c) 8m (d) 4m
Answer» ONG>Step-by-step EXPLANATION: B) 5m wish you will drop some thanks and MARK it brainlist

30.

4. If the area of a rectangle is 30 sq.m and the length is 6m, then the breadth is ………….. (a) 6m (b) 5m (c) 8m (d) 4m

Answer» ONG>Step-by-step EXPLANATION:

B) 5m

wish you will drop some thanks

and MARK it brainlist

Discussion

31.	Find the volume of each of the cube whose length of edge is 19cm.
Answer» ONG>ANSWER: a³ Step-by-step explanation: 19×19×19=6859 mark me BRAINLIEST

31.

Find the volume of each of the cube whose length of edge is 19cm.

Answer» ONG>ANSWER:

a³

Step-by-step explanation:

19×19×19=6859

mark me BRAINLIEST

Discussion

32.	If 5x - 16/7x - 18 = 2/3find x.(1) 16(2)20(3) 15 (4) 12
Answer» ONG>Answer: 12 Step-by-step explanation: 5x-16/7x-18=2/3 3(5x-16)=2(7x-18) 15x-14x=48-36 x=12

32.

If 5x - 16/7x - 18 = 2/3find x.(1) 16(2)20(3) 15 (4) 12

Answer» ONG>Answer:

12

Step-by-step explanation:

5x-16/7x-18=2/3

3(5x-16)=2(7x-18)

15x-14x=48-36

x=12

Discussion

33.	1. Circle the multiples of 12. 24, 97, 111, 144, 602. Write first 8 multiples of 9.3. Find the common multiples of 4 and 6.4. Find the least common multiple (LCM) of 5 and 7. give me some example
Answer» >24,144,60 9,18,27,36,45,54,63,72 12,24,36,48,60,..

Discussion

34.	खालीलपैकी कोणतेही दोन प्रश्न सोडवा.पुढील एकसामायिक समीकरण सोडवा : x-2y = -1; 2x - y = 7
Answer» ONG>Answer: PANTOPRAZOLE is used to treat certain STOMACH and ESOPHAGUS problems (such as acid reflux). It works by decreasing the amount of acid your stomach makes. This medication RELIEVES symptoms such as heartburn, difficulty swallowing, and persistent cough

34.

खालीलपैकी कोणतेही दोन प्रश्न सोडवा.पुढील एकसामायिक समीकरण सोडवा : x-2y = -1; 2x - y = 7

Answer» ONG>Answer:

PANTOPRAZOLE is used to treat certain STOMACH and ESOPHAGUS problems (such as acid reflux). It works by decreasing the amount of acid your stomach makes. This medication RELIEVES symptoms such as heartburn, difficulty swallowing, and persistent cough

Discussion

35.	બિંદુ (0,-5) ક્યાં અક્ષ પર છે તે જણાવો?
Answer» ONG>Answer: I N S T A G R A M મને અનુસરો = niral161 Step-by-step EXPLANATION: → બિંદુ (0,-5) y અક્ષ પર છે. → શ્રેષ્ઠ જવાબ તરીકે ચિહ્નિત કરો → આ વેબસાઇટ પર મને અનુસરો

35.

બિંદુ (0,-5) ક્યાં અક્ષ પર છે તે જણાવો?

Answer» ONG>Answer:

I N S T A G R A M મને અનુસરો = niral161

Step-by-step EXPLANATION:

→ બિંદુ (0,-5) y અક્ષ પર છે.

→ શ્રેષ્ઠ જવાબ તરીકે ચિહ્નિત કરો

→ આ વેબસાઇટ પર મને અનુસરો

Discussion

36.	If quadratic equation x²+k(2x+k-1)+2=0 has real and equal roots then find value of k.
Answer» ong>Answer: k=2 Step-by-step explanation: GIVEN, x2+k(2x+k−1)+2=0 Simplify above equation: x2+2kx+(k2−k+2)=0 Compare given equation with the general form of QUADRATIC equation, which ax2+bx+c=0 here, a=1,b=2k,c=(k2−k+2) Find discriminant: D=b2−4ac =(2k)2−4×1×(k2−k+2) =4k2−4k2+4k−8 =4k−8 Since roots are REAL and EQUAL (given) Put D=0 4k−8=0 k=2

36.

If quadratic equation x²+k(2x+k-1)+2=0 has real and equal roots then find value of k.

Answer»

ong>Answer:

k=2

Step-by-step explanation:

GIVEN, x2+k(2x+k−1)+2=0

Simplify above equation:

x2+2kx+(k2−k+2)=0

Compare given equation with the general form of QUADRATIC equation, which ax2+bx+c=0

here, a=1,b=2k,c=(k2−k+2)

Find discriminant:

D=b2−4ac

=(2k)2−4×1×(k2−k+2)

=4k2−4k2+4k−8

=4k−8

Since roots are REAL and EQUAL (given)

Put D=0

4k−8=0

k=2

Discussion

37.	The side of a square is 14cm.Find its perimeter
Answer» ong>Step-by-step explanation: PERIMETER of the square 4× LENGTH of a side 4×14cm = 56CM.

37.

The side of a square is 14cm.Find its perimeter

Answer»

ong>Step-by-step explanation:

PERIMETER of the square

4× LENGTH of a side

4×14cm = 56CM.

Discussion

38.	3] Solve the following sub-questions )What is the value of determinant5 3-7 – 434
Answer» ong>Answer: Alfaaz well PA ala all la all well laal laal ya well ka all la all ha ah ke all ga all da all la all ye wo pe wo or qu ye wo or wo it wo or qu wo TA qu R qu we we ye qu owl pe all of all la all la also lag Step-by-step EXPLANATION: oye AI yep ya wo

38.

3] Solve the following sub-questions )What is the value of determinant5 3-7 – 434

Answer»

ong>Answer:

Alfaaz well PA ala all la all well laal laal ya well ka all la all ha ah ke all ga all da all la all ye wo pe wo or qu ye wo or wo it wo or qu wo TA qu R qu we we ye qu owl pe all of all la all la also lag

Step-by-step EXPLANATION:

oye AI yep ya wo

Discussion

39.	Attempt any fourQ.3 Find the number of permutations of letters in the words ‘BALBHARATI1
Answer» MBER of PERMUTATIONS of the letters of the WORD BALBHARATI = 2 ! 3 ! = 302400.

Discussion

40.	The cost of 9 books is rs. 7245 find the cost of each bookswith step by step explaination
Answer» ONG>ANSWER: $cost \: of \: 9 \: books = rs.7245 \\ \\ cost \: of \: 1 \: books = \frac{7245}{9} \\ = rs.805$

40.

The cost of 9 books is rs. 7245 find the cost of each bookswith step by step explaination

Answer» ONG>ANSWER:

$cost \: of \: 9 \: books = rs.7245 \\ \\ cost \: of \: 1 \: books = \frac{7245}{9} \\ = rs.805$

Discussion

41.	Problem Description - 2/15 A clock gains 4 minutes after every 4 minutes. You set the correct time at 6:00 AM everyday to deal with this isWhat will be the correct time when the clock shows 8:00 PM?Options1:00 PM2:00 PM4:00 PM5:00 PM
Answer» ONG>Answer: Storms and tempests – supernatural events- CASTING of spells- HANDSOME prince- re- examine – their relationship- The tempest- mysterious island – love & reconciliation- hatred and envy – turbulent passions- characters- like the storms – transformed- promise of peace- play ends

41.

Problem Description - 2/15 A clock gains 4 minutes after every 4 minutes. You set the correct time at 6:00 AM everyday to deal with this isWhat will be the correct time when the clock shows 8:00 PM?Options1:00 PM2:00 PM4:00 PM5:00 PM

Answer» ONG>Answer:

Storms and tempests – supernatural events- CASTING of spells- HANDSOME prince- re-

examine – their relationship- The tempest- mysterious island – love & reconciliation-

hatred and envy – turbulent passions- characters- like the storms – transformed-

promise of peace- play ends

Discussion

42.	If 5 − = 3 + 4 then to find the value of 2+22−2
Answer» ong>ANSWER: ans . is 2+2 Step-by-step explanation: HOPE it helps you MARK me as a branilist

42.

If 5 − = 3 + 4 then to find the value of 2+22−2

Answer»

ong>ANSWER:

ans . is 2+2

Step-by-step explanation:

HOPE it helps you

MARK me as a branilist

Discussion

43.	A number x when divided by 7 leaves a remainder 4. If the expression (x^2 + 8x + 24) is divided by 7, then find the remainder.
Answer» the answer is in the attachment hope it helps please mark it the brainliest if you find it useful have a good day

43.

A number x when divided by 7 leaves a remainder 4. If the expression (x^2 + 8x + 24) is divided by 7, then find the remainder.

Answer»

the answer is in the attachment

hope it helps

please mark it the brainliest if you find it useful

have a good day

Discussion

44.	27. If alpha , Beta and gama are zeroes of the polynomial 6x3 + 3x2 - 5x + 1, then find the value of a alpha -1, +beta -1 + gama -1
Answer» ONG>ANSWER: same ALPHA I THINK so I don't know that actually

Discussion

45.	Sam purchased cloth worth 856.92, a calculator worth 268.56 and some dry fruits worth 306.75. How many did he spend in all?
Answer» ONG>ANSWER: SAM SPENT Rs.1432.23 in all

45.

Sam purchased cloth worth 856.92, a calculator worth 268.56 and some dry fruits worth 306.75. How many did he spend in all?

Answer» ONG>ANSWER: SAM SPENT Rs.1432.23 in all

Discussion

46.	If the pair of linear equation 3x-5y=11, (5a+b) x – (7a-b) y= 4(3a-2b) +1 has infinitely many solutions, find the values of aand b.
Answer» ong>Answer: Refer the attachment. Use the condition for INFINITE solutions and first FIND value of a in terms of b.Then SUBSTITUTE it and find value of b.Further,use value of b to get a. You should use first equate the first PART(a1/a2) of the infinite solution condition to the middle part(b1/b2) and again equate the middle part to the third part(c1/c2). Pls mark as brainliest if you liked my answer.

46.

If the pair of linear equation 3x-5y=11, (5a+b) x – (7a-b) y= 4(3a-2b) +1 has infinitely many solutions, find the values of aand b.

Answer»

ong>Answer:

Refer the attachment.

Use the condition for INFINITE solutions and first FIND value of a in terms of b.Then SUBSTITUTE it and find value of b.Further,use value of b to get a.

You should use first equate the first PART(a1/a2) of the infinite solution condition to the middle part(b1/b2) and again equate the middle part to the third part(c1/c2).

Pls mark as brainliest if you liked my answer.

Discussion

47.	F(x)=x²-x then f(x-1) - f(x+1)=
Answer» > LET's simplify step-by-step. F(x-1)-f(x+1) Distribute: = (f)(x)+(f)(-1)+-fxt =fx+-+-fx+-f Combine Like TERMS: =fx+-+-fx+-f =(fx+-fx)+(-f+-f) =-2F

47.

F(x)=x²-x then f(x-1) - f(x+1)=

Answer»

>

LET's simplify step-by-step.

F(x-1)-f(x+1)

Distribute:

= (f)(x)+(f)(-1)+-fxt

=fx+-+-fx+-f

Combine Like TERMS:

=fx+-+-fx+-f

=(fx+-fx)+(-f+-f)

=-2F

Discussion

48.	The angles of a triangle are (3x)°, (2x)° and (4x)°, than find value of x.
Answer» ONG>ANSWER: X= 20⁰ wish you will DROP some thanks and mark it BRAINLIST

48.

The angles of a triangle are (3x)°, (2x)° and (4x)°, than find value of x.

Answer» ONG>ANSWER:

X= 20⁰

wish you will DROP some thanks

and mark it BRAINLIST

Discussion

49.	Prove that: cot 0 - tan 0 -2 cos2 0-1/ sin 0 cos0
Answer» ONG>Answer: hope it helps mate please MARK as BRAINLIEST

49.

Prove that: cot 0 - tan 0 -2 cos2 0-1/ sin 0 cos0

Answer» ONG>Answer: hope it helps mate

please MARK as BRAINLIEST

Discussion

50.	Problem Description - 1/15 Bob bought a bicycle for Rs 15,000 last year and sold it to Joel at 10% loss Joel then sold the bude to Bira a 20 polandDetermine how much Lia paid for the bicycleOptionsRs. 17.820Rs. 17.500Rs. 18.620Rs 17680.
Answer» ONG>ANSWER: nowwwwwwwwwwwwwwwwwww

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

3. Prove that the following are irrationals: (1) 1/undeeroot2(ii) 7/underroot5(iii)6+underroot2​

PARTA1) Write one solution for the equation 2y + 3x - 9​

If shopkeeper has 10 mangoes. he gave the 5 mangoes to a man and 3 mangoes 2 a lady and a shopkeeper get again 20 mangoes and he gave 10 mangoes to another shopkeeper and 4 mangoes to a kid how many mangoes did he have now?tough but simple​​

It takes 2 hour for 6 pipes to fill a tank. How much time will be needed to fill 10 such tanks if 12 pipes are used ? ​

निम्नलिखित पूण घन संख्या आकलन द्वारा ज्ञात करें 4913​

(25) Use Euclis division algorithm to find the H.C.F. of 847 and 2160.​

What is the difference netween batter system and number system?​

You have two pipes P1 and P2 that can fill a large bucket in 4 hours and 2 hours, respectively and you open the pipes at alternate hours. In the give context, how many hours will it take to fill the bucket if you open P1 first?​

. A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30minutes, the tank is filled in 40 minutes. The pipe B canalone fill the tank in(a) 45 mints (b) 60 mints (c) 75 mints (d) 90 mints​

У роппо 10.wigile5))Find the distance between the points R(0, - 3) and S ​

Please answer fastspammers will be reported​

Please give me answers now​

सुतारपक्षाCrow(को) काव-Peacock(पिकॉक) मोर​

Find the value of x in : |x+3|-|x|=3 ​

In Find the values of a and b from the quadratic equation 2x2 - 5 + 7 = 0 ill) Find X, if fixi = 252 and fi = 420,​

Solve this question. ​

Classify thegiren sumberrational 7. 474747.. And1.10100100010001...​

Simplify:2x34x232x (22) solutions​

5) Find real root of given equation by using bisection method if f(x) = x^2 -logx-12 in (3,4) upto four iteration​

A ki power 4 x5a41 x2a5​

find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients. (I) x²+2x+3 ​

In Find the values of a and b from the quadratic equation 2x2 - 5x + 7 = 0 ill) Find, if fixi = 252 and Efi = 420.iv) If for an A. P. d = 10. What is the value of to - ty?​

A car covers 2/3rd of total distance with 1.5 times of its original speed and rest distance with its original speed. If the original speed of car is 70 kmph, then find the average speed of the car throughout the wholejourney.?​

Find the sum of (i) (+7) + (−11) (ii) (−13) + (−10)​

Now group the terms 72.3 + (-39.1) = 70 + 2 + 0.3 + (-30) + (-9) + (-0.1) in the expression in part C using the Associative Property.

10. With the help of the following numbers show that: H.C.F. L.C.M. = First number x Second number:(a) 16, 24(b) 30, 45​

The equation x3 - 12x +39x - 28 = 0 whose roots are in the b) G.P.c) H.Pd) Nonea) A.P​

Estimate each sums to the nearest ten 62 65​

Sin theta / cot theta + cosec theta-sin theta/ cot theta - cosec theta​

4. If the area of a rectangle is 30 sq.m and the length is 6m, then the breadth is ………….. (a) 6m (b) 5m (c) 8m (d) 4m​

Find the volume of each of the cube whose length of edge is 19cm.​

If 5x - 16/7x - 18 = 2/3find x.(1) 16(2)20(3) 15 (4) 12​

1. Circle the multiples of 12. 24, 97, 111, 144, 602. Write first 8 multiples of 9.3. Find the common multiples of 4 and 6.4. Find the least common multiple (LCM) of 5 and 7. give me some example ​

खालीलपैकी कोणतेही दोन प्रश्न सोडवा.पुढील एकसामायिक समीकरण सोडवा : x-2y = -1; 2x - y = 7​

બિંદુ (0,-5) ક્યાં અક્ષ પર છે તે જણાવો?​

If quadratic equation x²+k(2x+k-1)+2=0 has real and equal roots then find value of k.​

The side of a square is 14cm.Find its perimeter​

3] Solve the following sub-questions )What is the value of determinant5 3-7 – 434​

Attempt any fourQ.3 Find the number of permutations of letters in the words ‘BALBHARATI1​

The cost of 9 books is rs. 7245 find the cost of each bookswith step by step explaination​

Problem Description - 2/15 A clock gains 4 minutes after every 4 minutes. You set the correct time at 6:00 AM everyday to deal with this isWhat will be the correct time when the clock shows 8:00 PM?Options1:00 PM2:00 PM4:00 PM5:00 PM​

If 5 − = 3 + 4 then to find the value of 2+22−2​

A number x when divided by 7 leaves a remainder 4. If the expression (x^2 + 8x + 24) is divided by 7, then find the remainder.

27. If alpha , Beta and gama are zeroes of the polynomial 6x3 + 3x2 - 5x + 1, then find the value of a alpha -1, +beta -1 + gama -1 ​

Sam purchased cloth worth 856.92, a calculator worth 268.56 and some dry fruits worth 306.75. How many did he spend in all?​

If the pair of linear equation 3x-5y=11, (5a+b) x – (7a-b) y= 4(3a-2b) +1 has infinitely many solutions, find the values of aand b.

F(x)=x²-x then f(x-1) - f(x+1)=​

The angles of a triangle are (3x)°, (2x)° and (4x)°, than find value of x.

Prove that: cot 0 - tan 0 -2 cos2 0-1/ sin 0 cos0​

Problem Description - 1/15 Bob bought a bicycle for Rs 15,000 last year and sold it to Joel at 10% loss Joel then sold the bude to Bira a 20 polandDetermine how much Lia paid for the bicycleOptionsRs. 17.820Rs. 17.500Rs. 18.620Rs 17680.​

3. Prove that the following are irrationals: (1) 1/undeeroot2(ii) 7/underroot5(iii)6+underroot2

PARTA1) Write one solution for the equation 2y + 3x - 9

If shopkeeper has 10 mangoes. he gave the 5 mangoes to a man and 3 mangoes 2 a lady and a shopkeeper get again 20 mangoes and he gave 10 mangoes to another shopkeeper and 4 mangoes to a kid how many mangoes did he have now?tough but simple

It takes 2 hour for 6 pipes to fill a tank. How much time will be needed to fill 10 such tanks if 12 pipes are used ?

निम्नलिखित पूण घन संख्या आकलन द्वारा ज्ञात करें 4913

(25) Use Euclis division algorithm to find the H.C.F. of 847 and 2160.

What is the difference netween batter system and number system?

You have two pipes P1 and P2 that can fill a large bucket in 4 hours and 2 hours, respectively and you open the pipes at alternate hours. In the give context, how many hours will it take to fill the bucket if you open P1 first?

. A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30minutes, the tank is filled in 40 minutes. The pipe B canalone fill the tank in(a) 45 mints (b) 60 mints (c) 75 mints (d) 90 mints

У роппо 10.wigile5))Find the distance between the points R(0, - 3) and S

Please answer fastspammers will be reported

Please give me answers now

सुतारपक्षाCrow(को) काव-Peacock(पिकॉक) मोर

Find the value of x in : |x+3|-|x|=3

In Find the values of a and b from the quadratic equation 2x2 - 5 + 7 = 0 ill) Find X, if fixi = 252 and fi = 420,

Solve this question.

Classify thegiren sumberrational 7. 474747.. And1.10100100010001...

Simplify:2x34x232x (22) solutions

5) Find real root of given equation by using bisection method if f(x) = x^2 -logx-12 in (3,4) upto four iteration

A ki power 4 x5a41 x2a5

find the zeroes of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients. (I) x²+2x+3

In Find the values of a and b from the quadratic equation 2x2 - 5x + 7 = 0 ill) Find, if fixi = 252 and Efi = 420.iv) If for an A. P. d = 10. What is the value of to - ty?

A car covers 2/3rd of total distance with 1.5 times of its original speed and rest distance with its original speed. If the original speed of car is 70 kmph, then find the average speed of the car throughout the wholejourney.?

Find the sum of (i) (+7) + (−11) (ii) (−13) + (−10)

10. With the help of the following numbers show that: H.C.F. L.C.M. = First number x Second number:(a) 16, 24(b) 30, 45

The equation x3 - 12x +39x - 28 = 0 whose roots are in the b) G.P.c) H.Pd) Nonea) A.P

Estimate each sums to the nearest ten 62 65

Sin theta / cot theta + cosec theta-sin theta/ cot theta - cosec theta

4. If the area of a rectangle is 30 sq.m and the length is 6m, then the breadth is ………….. (a) 6m (b) 5m (c) 8m (d) 4m

Find the volume of each of the cube whose length of edge is 19cm.

If 5x - 16/7x - 18 = 2/3find x.(1) 16(2)20(3) 15 (4) 12

1. Circle the multiples of 12. 24, 97, 111, 144, 602. Write first 8 multiples of 9.3. Find the common multiples of 4 and 6.4. Find the least common multiple (LCM) of 5 and 7. give me some example

खालीलपैकी कोणतेही दोन प्रश्न सोडवा.पुढील एकसामायिक समीकरण सोडवा : x-2y = -1; 2x - y = 7

બિંદુ (0,-5) ક્યાં અક્ષ પર છે તે જણાવો?

If quadratic equation x²+k(2x+k-1)+2=0 has real and equal roots then find value of k.

The side of a square is 14cm.Find its perimeter

3] Solve the following sub-questions )What is the value of determinant5 3-7 – 434

Attempt any fourQ.3 Find the number of permutations of letters in the words ‘BALBHARATI1

The cost of 9 books is rs. 7245 find the cost of each bookswith step by step explaination

Problem Description - 2/15 A clock gains 4 minutes after every 4 minutes. You set the correct time at 6:00 AM everyday to deal with this isWhat will be the correct time when the clock shows 8:00 PM?Options1:00 PM2:00 PM4:00 PM5:00 PM

If 5 − = 3 + 4 then to find the value of 2+22−2

27. If alpha , Beta and gama are zeroes of the polynomial 6x3 + 3x2 - 5x + 1, then find the value of a alpha -1, +beta -1 + gama -1

Sam purchased cloth worth 856.92, a calculator worth 268.56 and some dry fruits worth 306.75. How many did he spend in all?

F(x)=x²-x then f(x-1) - f(x+1)=

Prove that: cot 0 - tan 0 -2 cos2 0-1/ sin 0 cos0

Problem Description - 1/15 Bob bought a bicycle for Rs 15,000 last year and sold it to Joel at 10% loss Joel then sold the bude to Bira a 20 polandDetermine how much Lia paid for the bicycleOptionsRs. 17.820Rs. 17.500Rs. 18.620Rs 17680.