Question

Please check! Pre cal. Parabolas. I will medal & fan

Answer 1

It costs John's Manufacturing C dollars per hour to operate its golf ball division. An analyst has determined that C is related to the number of golf balls produced per hour, x, by the equation C = 0.007x^2 - 2.8x + 100 . What number of golf balls per hour should John's Manufacturing produce to minimize the cost per hour of manufacturing them?

Answer 2

i got 97 and then rounded up to 100 golf balls

Answer 3

min is at the vertex
first coordinate of the vertex is \(-\frac{b}{2a}=\frac{2.8}{.014}\) whatever that is

Answer 4

should be 200

Answer 5

actually that is easy to compute
it is 200

Answer 6

thx can you help me with this one to? i got a wrong answer

Answer 7

A golf ball is hit off the top of a cliff that is 100 feet tall at an angle of 45º to the horizontal with an initial velocity of 95 feet per second. The quadratic equation shown below models the height, h(x), of the ball when it is x feet from the cliff's edge. How high above the ground will the ball be when it is 100 feet from the cliff's edge? Round the answer to the nearest hundredth.

Answer 8

h(x)= -32x^2/95^2 + x + 100

Answer 9

i plugged in 100 to x

Answer 10

set it equal to 100, solve for \(x\)

Answer 11

-32x^2/95^2 + x + 100 = 100 ?

Answer 12

-32x^2/95^2*100 + x/100 + 100/100 = 1 ?

Answer 13

@satellite73 ?

Answer 14

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