I’ve been having trouble with this question as i haven’t learnt it yet. r is inversly proportional to a r =12 when a =1.5 work out the value of r when a=5 work out the value of a when r=9

R = = 3.6 and A = 2

given that R is inversely proportional to A, then

R = ← k is the constant of variation

To find k use the condition R = 12 when A = 1.5

k = RA = 12 × 1.5 = 18

the equation is therefore

R =

when A = 5, then

R = = 3.6

when R = 9, then

9 = ( multiply both sides by A )

9A = 18 ( divide both sides by 9 )

A = 2

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet