Answer:
16.6 feets .
Step-by-step explanation:
Length of wire = 30 feets
Distance between base of tree and ground = 25 feets
Height of tree, h
Using Pythagoras rule :
h² = 30² - 25²
h² = 900 - 625
h² = 275
h = sqrt(275)
h = 16.583
h = 16.6 feets
Height of tree is 16.6 feets
x = -9
3-2x=21
-3 -3
-2x=18
/-2 /-2
x=-9
they were in an elevator
87.5
By completing the square,
y
=-14x^2+70x
=-14(x^2-5x)
=-14(x-5/2)^2+175/2
the max. height=175/2
i.e. 87.5
I hope this helps you
