Question

plesee help me do I need it under 25min and don't answer if you don't know or else u will be reported thank you (◔‿◔)​

Answer 1

l = 2.25 cm

Explanation:

given l is inversely proportional to w² then the equation relating them is

l =
`(k)/(w^2)` ← k is the constant of proportion

(i)

to find k use the condition w = 1.5 , l = 16 , then

16 =
`(k)/(1.5^2)` =
`(k)/(2.25)` ( multiply both sides by 2.25 )

36 = k

l =
`(36)/(w^2)` ← equation of proportion

(ii)

when w = 4 , then

l =
`(36)/(4^2)` =
`(36)/(16)` = 2.25 cm