Answer:
b. 1:3
Step-by-step explanation:
To find the hypotenuse of the first triangle, use a^2 + b^2 = c^2
c = sqrt (5^2 + 12^2)
c = 13
From here, since they are similar, you can set up a proportion
13:39
1:3

The equivalent expression is ~

Let's evaluate f(b - 2) ~
Answer:
30 ft.
Step-by-step explanation:
d = √((3 - 31)² + (18 - 6)²) = 30.46309
Answer:
I did this exact same question on USATestPrep and here's what I answered that I got correct:
B, C and this one isn't an answer choice but the additional answer was: "1,000 grams of radioactive material with a half-life of 6 hours."
Hope this helps! I'm sorry if it doesn't help future people who sees this :/