Answer:
12350%
Step-by-step explanation:
. 76 - 34 = 42
. 42 divided by 34 = 1.23529411765
. 1.23529411765 multiplied by 100 = 123.529411765
. 123.529411765 ≈ 123.5 * 100 = 12350%
Answer:
66.5%
Step-by-step explanation:
95.1/143*100=66.5%
The answer to the equation is the second option.
We have similar triangles so
12/x = (12+78)/(x+13)
We can skip some algebra by doing the ratio on the pieces. We'll show it works at the end.
12/x = 78/13
x = 12(13)/78 = 2
We check
12/2 = 6
(12+78)/(2+13) = 90/15 = 6, good
Answer: x=2