What is the length of the base of a right triangle with an area of 20 m² and a height of 4 m? a.5 m b.10 m c.80 m d.160 m

To find the length, follow the equation l(w) = a

l or b = length or base
w or h = width or height
a = area

b x h = a
b x (4) = 20
4b = 20
4b/.4 = 20/4
b = 20/4
b = 5

A. 5m is your answer

hope this helps

1.17+3.99a. you combine the terms with a to create 3.99 and the 1.17 stays because it has no like terms or a variable

B. 16is the absolute value