Answer:
d = 101
Step-by-step explanation:
t = 11
11 x 11 = 121
-20 + 121 = 101
check: 101- 121 = -20 (correct)
I hope this helps, I tried to make my handwriting as easy to read and to explain as much, I just used a calculator to compute all those values to find AC
we have two similar triangles.
we know that in similar traingles ratios of the corresponding sides are always equal.
we have AB is propotional to PQ
BC is propotional to QR
AC is propotionbal to PR
here we dont have the lengths of sides
so the length of PR and QR will be equal to some constant have same value .
The answer is x = 78/5
<span>(1/5) (5x + 12) = 18
</span>
Multiple both sides by 5:
<span>5 * (1/5) (5x + 12) = 5 * 18
5x + 12 = 90
Subtract 12 from both sides:
5x + 12 - 12 = 90 - 12
5x =78
Divide both sides by 5:
5x/5 = 78/5
x = 78/5</span>