Question

if Q is directly proportional to P and Q = 28 When p=4.express Q in terms of P. find the value of Q when P=5.calculate the value of P when Q =42​

Answer 1

Answer:

(a) q = 7p

(b) q = 35

(c) p = 6

Explanation:

Step-by-step explanation:

(a) law connecting P an Q, means an equation connecting Q an P

So, q=kp

After substituting, 28=k4

k = 28/4

q=kp

k = 7

So, q = 7p

(b) As we know, q = 7p

So, after substituting the value, p = 5

We Get,

q = 7(5)

q = 35

Answer 2

Explanation:

(1) Q=7p (2)Q=35 (3)P=6