Question

Plz solve these questions correctly and honestly(don't give rubbish answer)
answers for hint
7) 10,6
8) 3
9) 20.334
10) 20
11) a. Rs. 600/x
b. 600/x-4 - 600/x=5,x=24
12) 23
13) 140/x - 140/x+1=7, x=4​

Answer 1

Step-by-step explanation:

7. Let the larger part be x. Then, the smaller part =16−x

By hypothesis, we have

2x²=(16−x)² +164

⇒x²+32x−420=0⇒(x+42)(x−10)=0

⇒x=−42 or x=10

∵ x can not be a negative

⇒x=10

hence the required parts are 10 and (16−10)=6.

8. Let the no. be x

ATQ,

5(x)=(2x²)-3

5x=2x²-3

2x²-5x-3=0

2x²-6x+x-3=0

2x(x-3)+1(x-3)=0

x=3, x=-1/2

since x cannot be negative so x=3.

9.Let the smaller part bet x and larger part be y. Since the number is positive, there