Since the two angles have a sum of 90 degrees, we can add the two expressions together and set it equal to 90.
Answer:
C
Step-by-step explanation:
ABCD is a rectangle so BC = AD
Answer:
x = 10
Step-by-step explanation:
7x - 15 = 4x + 15
7x - 4x = 15 + 15
3x = 30
x = 10
6 - 2x = 18
2x = - 12
x = - 6
In a 30-60-90 triangle, if the short leg is x then the longer leg is x√3 and the hypotonuse is 2x
so if the rafter (hyppotnuse) is 9ft then
9ft=2x
4.5ft=1x
the short leg is 4.5ft