Mathematics: If Q is inversely proportional to P and Q =0.25 when P = 2,(i) express Q in terms of P,(ii) find the value of Q when P = 5,(iii) calculate the value of P when Q = 0.2.

Oh yea girl we on the same page i don’t know this either...

If Q is inversely proportional to P and Q =0.25 - id0257254383, harleycochran2ovyt3n

maddy121209

31.01.2022

Step-by-step explanation:

Q is inversely proportional to P is written as

$Q \: \: \alpha \: \frac{k}{P}$

where k is the constant of proportionality

we must first calculate the relationship between them

So we have

when Q = 0.25

P = 2

Substitute the values into the above equation

That's

$0.25 = \frac{k}{2}$

Cross multiply

We have

k = 0.25 × 2 = 0.5

So the formula for the variation is

$Q = \frac{0.5}{P}$

ii)

when P = 5

We have

$Q = \frac{0.5}{5}$

We have the answer as

Q =0.1iii)

When Q = 0.2

We have

$0.2 = \frac{0.5}{P}$

Cross multiply

That's

0.2P = 0.5

Divide both sides by 0.2

We have the answer as

P = 2.5

Hope this helps you

0,0(0 оценок)