Answer: The altitude is 90.
Step-by-step explanation: the formula to calculate a trapezoid: A = (.5)(B+b)h.
plug the values in.
8100 = (.5)(180)h
8100 = 90h
h = 8100/90
h = 90
Answer:
can you answer this first
x = -3±sqrt( 5)
Step-by-step explanation:
(x + 3)^2-5=0
Add 5 to each side
(x + 3)^2-5+5=0+5
(x + 3)^2 = 5
Take the square root of each side
sqrt((x + 3)^2 )=±sqrt( 5)
x+3 = ±sqrt( 5)
Subtract 3 from each side
x+3-3 = -3±sqrt( 5)
