Answer:
See explanation, and comment for more details!
Step-by-step explanation:
10. The perimeter of any shape is the sum of the length of the sides, which means that the perimeter of this triangle is x+y+z.
11. Since this is a right triangle, the two legs form the height and base. The area of this triangle is therefore x*y/2.
12.
a. x=3, y=4, z=5
b. 
c.
Hope this helps!
Answer:
18kg is the correct answer
The answer is 19 degrees F.
15 - (-4) = 19
(x + 5) * (x − 5) =
x² - 25
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x * x = x² and 5 * (-5) = -25