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Stels [109]
3 years ago
15

Which of the following is the value of f(-4) in the function f(x) = -2x - 3? no links

Mathematics
1 answer:
Scilla [17]3 years ago
8 0

Answer:

5

Step-by-step explanation:

f(-4)= -2(-4)-3

=8-3

=5

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If an airplane in a 1 in. : 4 ft. scale drawing is 5 in. long, how long is the actual airplane? Use proportions to solve the pro
Lunna [17]

Answer:

20ft

Step-by-step explanation:

20ft is the answer because you would do 4 x 5 = 20, since the scale factor is 1in : 4ft

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4 0
2 years ago
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choli [55]

Answer: 12

Step-by-step explanation:

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Solve for c

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3 years ago
An athletic facility is building an indoor track. The track is composed of a rectangle and two semicircles.
Mazyrski [523]

Answer:

(The image is not provided, so i draw an idea of how i supposed that the problem is, the image is at the bottom)

Ok, we have a rectangle of length x by r.

At the extremes of length r, we add two semicircles.

So the perimeter will be equal to:

Two times x, plus the perimeter of the two semicircles (that can be thought as only one circle).

The radius of the semicircles is r, and the perimeter of a circle is:

C = 2*pi*r

where pi = 3.14

Then the perimeter of the track is:

P = 2*x + 2*pi*r.

b) now we want to solve this for x, this means isolating x in one side of the equation.

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3 years ago
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