Answer:

Step-by-step explanation:

Answer:
4 and 12
Step-by-step explanation:
a = young
b = old
b = 3a, a+b =2a+8 => a = 4, b = 12
Answer:
Yes
Step-by-step explanation:
They are similiar because the big triangle is a dialated version of the first one
Answer:
x= 11
y= -2
Step-by-step explanation:
8y + 27 =x
3(8y+27) + 7y =19
24y + 81 + 7y =19
31y + 81 =19
<u> -81 -81</u>
<u>31y</u> = <u>-62</u>
<u>31 31 </u>
y = -2
-x + 8(-2) = -27
-x - 16 = -27
<u> +16 +16 </u>
-x = -11
x= 11
C. 7.8 feet is round your answer to the tenths place.