Answer:
I don't know
Step-by-step explanation:
Use the app and search it instead of waiting.
Answer:
144 feet
Step-by-step explanation:
Since this is a quadratic equation, we simply need to find the vertex in order to determine the maximum height!
To solve the equation, follow these steps!:

Now we insert x back into the equation...

32
——- (after reducing the fraction)
105
Explanation: find reciprocal of divisor:
21/12 : 12/21
Multiply dividend:
8/15 divide21/12=8/15x12/21=
8 x12
———= 96/315
15x21
Answer:
81! THANK YOU<3333333333333
Answer:
x₁ = - 4 + √31
x₂ = - 4 - √31
Step-by-step explanation:
x² + 8x = 15
x² + 8x - 15 = 0
x = [- 8 ± √8² - 4×1×(-15)]/(2×1)
x = (-8 ± 2√31)/2
x₁ = (-8 ± 2√31)/2
x₁ = - 4 + √31
x₂ = - 4 - √31