Question

Solve this mcqs with explaination ....don't answer wrong varna sab report kr dunga​

Answer 1

Explanation:

1) option d

Reason:-

61/8=7 5/7 lies between 7 and 8

2)Option c

Reason:-

the rationalising factor of 4-√5 is 4+√5

since (4-√5)(5+√5)=4²-√5²=16-5=11 is a rational

3)option b

Reason:-

If x-2 is a factor of p(x)=x³-3x²+ax+24 then p(2)=0

=>2³-3(2)²+a(2)+24=0

=>8-12+2a+24=0

=>2a+20=0

=>2a=-20

=>a=-20/2

=>a=-10

4)option d

Reason:-

It is a quadratic polynomial since it has the degree is 2

5)option c

Reason:-

(x+2,7)=(2x-1,7)

=>x+2=2x-1

=>2x-x=2+1

=>x=3

6)Option b

Reason:-

the distance between the point from origin is √(x²+y²)

= √(0²+6²)

=>√6²

=>6

7)option b

Reason:-

if (5,2) is a solution of x+3y=K

then 5+3(2)=k

=>5+6=11=k

k=11

8)option d

Reason:-

angle A =angle b=angle C=then it is an Equilateral triangle so each angle is equal to 60°

9)option b

AB=AC=>angleB=angle C

(angles opposite to equal sides are equal)

=>Angle C=75°

10)option d

Reason:-

No. of possible outcomes=6

No.of favourable outcomes =1

no of favourable outcomes/total no. of possible outcomes

=>1/6

Answer 2

Answer:

1- (d)

2-(c)

3-(b)

4-(d)

5-(c)

6-(b)

7-(b)

8-(d)

9-(b)

10-(d)

hope u like it

plz... mark me as a brainliest