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Sladkaya [172]
3 years ago
13

1. The height of a pop fly ball over the time after the ball is hit is modeled by the

Mathematics
2 answers:
stira [4]3 years ago
7 0

Answer:

5.12 seconds to the nearest hundredth.

Step-by-step explanation:

When the ball hits the ground h = 0 so

-16t^2 + 81t + 5 = 0

t =  [ -81 +/- sqrt ((81^2 - 4 * -16 * 5)]/ (2*-16)

=  (-81 +/- sqrt 6881) / -32

= 5.12 , -0.6

So the answer is 5.123 seconds.

OLEGan [10]3 years ago
3 0

Answer:

<h2>5.123 seconds</h2>

Step-by-step explanation:

F(x) = ax2 + bx + c

For further explanation comment

<h3><u>Brain Please!</u></h3>
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Answer:

Step-by-step explanation:

A dependent variable in an expression is one whose value can be determined only when the value of other variable (i.e independent) is known.

A. The cost at the fitness center depends on the number of months (x).

The cost is the dependent variable, and number of months (x) is the independent variable.

f(x) = 100 + 40x

Example, the cost paid for 12 months can be determined as;

f(12) = 100 + 40(12)

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B. The lettuce is sold at $1.69 per pound. The cost depends on the number of pounds of lettuce bought.

The cost is the dependent variable, while the number of pounds of lettuce (x) bought is the independent variable.

So that;

f(x) = 1.69x

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f(x) = 1.69(10)

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Answer:

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Step-by-step explanation:

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