Answer: x is 20
Step-by-step explanation:
This is ratio
a : c = b : x and d : unknown
a : c = 9 : 12 = 3 : 4 which is 9/12
b : x = 15 : x which is 15 / x
So the proportion will be :
3/4 = 15/x
So Cross multiplying
3x = 90
Divide both side by 3
x = 90/3
x = 20
If it is area you're looking for, the answer is 7.92 cm^2, or ~7 11/12 cm^2.
Answer:
40 1/4
Step-by-step explanation:
160 is a multiple of 4
160 / 4 = 40
40 1/4
