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lakkis [162]
3 years ago
13

The surface of a football field is shaped like a parabola. The cross section of a field with synthetic turf can be modeled by th

e equation y=-0.000234x(x-120) where x is the horizontal distance and y is the height in feet. How wide is the field?

Mathematics
1 answer:
77julia77 [94]3 years ago
6 0

Answer: The width of the field = 120

Step-by-step explanation: This question can be solved by first opening of the bracket, then relating the equation to quadratic general equation and finally solve for domain of X by using quadratic formula.

Please find the attached file for the solution.

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for the second question u have asked

Step-by-step explanation:

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gabrielle has $0.55 in dimes and nickels. She has 6 coins altogether. how many coins of each kind does she have?
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the answer is 5 dimes and 1 nickel.

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Jeremiah read 5/6 a book in 2/3 an hour. How much can he read in an hour?
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Answer:he can read 1 and 3/12 or 15/12 books in an hour.

Step-by-step explanation:

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3 years ago
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1) f(x) = 2x + 4, g(x) = 4x2 + 1; Find (g ∘ f)(0).
Sholpan [36]

Answer:

<h2>(g \: \circ \: f)(0) = 17</h2>

Step-by-step explanation:

f(x) = 2x + 4

g(x) = 4x² + 1

In order to find (g ∘ f)(0) we must first find

(g ° f )(x)

To find (g ° f )(x) substitute f(x) into g(x) that's for every x in g(x) replace it with f(x)

That's

<h3>(g \: \circ \: f)(x) = 4( ({2x + 4})^{2} ) + 1 \\  = 4(4 {x}^{2}  + 16x + 16) + 1 \\  =  {16x}^{2}  + 64x + 16 + 1</h3>

We have

<h3>(g \: \circ \: f)(x) =  {16x}^{2}  + 64x + 17 \\</h3>

Now to find (g ∘ f)(0) substitute the value of x that's 0 into (g ∘ f)(0)

We have

<h3>(g \: \circ \: f)(0) = 16( {0})^{2}  + 64(0) + 17 \\</h3>

We have the final answer as

<h3>(g \: \circ \: f)(0) = 17</h3>

Hope this helps you

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4 years ago
Please help I’ll mark brainliest!!!
andrey2020 [161]

Answer:

(3,0)

Step-by-step explanation:

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