My friend Joogh got some kents and some lirns. Kents cost $2 each and lirns cost $8 each. He got 9 items for about $24.
Write a system of equations, in standard form, to model the
relationship between Joogh's kents (x) and lirns (y).

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36

the answer is  

d.

21

i did this one. so you should get it right.

sorry for any inconvenience this may have caused try again

try again.