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Vesnalui [34]
2 years ago
9

The arch support of a bridge can be modeled by y=-0.00125x^2, where x and y are measured in feet. a) the width of the arch is 80

0 feet. Describe the domain of the function and explain. Find the height of the arch.

Mathematics
1 answer:
Angelina_Jolie [31]2 years ago
4 0

Answer:

The given function is

y=-0.00125x^{2}

Which is a parabola concave down with vertex at the origin of the coordinate system.

If the width of the arch is 800 feet, that means 400 feet on negative side and 400 feet and positive.

The image attached shows the graph of this parabola, where you can see the points for each extreme of the arch.

Notice that each point of the base of the arch is at y = -200, that means the height of the arc is 200 feet.

Now, the domain for this function is all real numbers. The range for this function is all number least or equal than zero.

D: (infinite, -infinite)\\R: [0, -infinite)

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If DF=78, DE=5x-9, and EF=2x+10, find DE.
Kazeer [188]

Given that E is a point between Point D and F, the numerical value of segment DE is 46.

<h3>What is the numerical value of DE?</h3>

Given the data in the question;

  • E is a point between point D and F.
  • Segment DF = 78
  • Segment DE = 5x - 9
  • Segment EF = 2x + 10
  • Numerical value of DE = ?

Since E is a point between point D and F.

Segment DF = Segment DE + Segment EF

78 = 5x - 9 + 2x + 10

78 = 7x + 1

7x = 78 - 1

7x = 77

x = 77/7

x = 11

Hence,

Segment DE = 5x - 9

Segment DE = 5(11) - 9

Segment DE = 55 - 9

Segment DE = 46

Given that E is a point between Point D and F, the numerical value of segment DE is 46.

Learn more about equations here: brainly.com/question/14686792

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3 0
1 year ago
PLEASE HELP PLEASE PLEASE
sp2606 [1]

Answer:

14.8

Step-by-step explanation:

By the Pythagorean theorem, ...

... x² = 7² + 13² = 218

... x = √218 ≈ 14.7648 ≈ 14.8

4 0
3 years ago
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Which is the correct form of q(x) + r(x)/b(x) for expression 7x^4+x+14/x+2
BARSIC [14]
<span>(7x^4+x+14)/(x+2)
</span>(7x^4+x+14)----------------------|(x+2)
-14x³+x+14-------------------------7x³-14x²+28x-55------> q(x)
28x²+x+14
-55x+14
110+14=124------------------------> r(x)
<span>
 </span>r(x)=124
b(x)=x+2
q(x)=7x³-14x²+28x-55

then
q(x) + r(x)/b(x)---------> (7x³-14x²+28x-55)+(124)/(x+2)

the answer is (7x³-14x²+28x-55)+(124)/(x+2)
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What is the image of (−3,−9) after a dilation by a scale factor of 1/3 centered at the origin.
denis-greek [22]

Answer:

(-1,-3)

Step-by-step explanation:

Multiply both x and y values by 1/3 or divide both by 3.

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Which statement best describes the function h(t) = 210 – 15t?
VMariaS [17]

Answer:

h is the function name; t is the input, or independent variable; and h(t) is the output, or dependent variable.

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