The pythagorean theorem holds for every right triangle: given the legs
and the hypothenuse
, the triangle is right if and only if

So, you have to check:

So the first triangle can't be a right triangle.

So the second triangle is a right triangle.
The third triangle can't be right, because it has the same legs but a different hypothenuse
Finally, we have

So the last triangle can't be a right triangle.
638-243 = 395 miles
rounding up, it would be 400 miles
Answer: 1 9/16
Step-by-step explanation:
1. Switch the numerator and the denominator of the second fraction. (5/8 ÷ 2/5 = 5/8 x 5/2)
2. Multiply the two fractions. (5/8 x 5/2 = 25/16)
3. Simplify the answer. (25/16 = 1 9/16)
7- B
8- C
I’m pretty sure please don’t hurt me if I’m wrong