Answer:
Triangle #1 is similar to Triangle #2
Step-by-step explanation:
For two triangles to be similar, they need to be the same shape but not size. These two triangles are the same shape but not size :)
The other answers available also don't match. It cannot be 1 or 2 because they are definitely not true. Answer 3 and 4 don't really make sense.
x = (13) ^ 1/3
x is approximately 2.351334688
x^3 + 7 = 20
Subtract 7 from each side
x^3 + 7-7 = 20-7
x^3 = 13
Take the cube root of each side
x^3 ^ 1/3 = (13) ^ 1/3
sister and brother
not sure
i dunno