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Sauron [17]
3 years ago
9

Find the radius and circumference of a CD with a diameter of 4.75 inches. SOMEONE PLEASE HELP ME!!!!!

Mathematics
2 answers:
Genrish500 [490]3 years ago
6 0
Here are your equations:
r = diameter/2
C = 2*pi*r

Now all you have to do is plug in the 4.75 for the diameter, and you have your answer!
If you don't have a calculator with "pi" on it, use 3.14159.
igomit [66]3 years ago
3 0
The radius is half of the diameter.
To find the circumference, use the equation C=2(pi)r or C=(pi)d.
r meaning radius. d meaning diameter.
(pi) is about 3.14 or 22/7
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This situation can be represented by

y = 33x + 223

y = 32x + 239

I still like substitution, so let’s plug in 33x + 223 into the second equation

33x + 223 = 32x + 239

Move the terms into appropriate sides

33x - 32x = 239 - 223

Combine like terms

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24 books.

Step-by-step explanation:

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3 years ago
“a railroad bridge spans a gorge 40 feet wide and connects two cliffs at heights of 98 and 158 feet above the bottom of the gorg
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Answer:

Height above the bottom gorge is 113 feet

Step-by-step explanation:

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The slope of the bridge = (158-98)/40 = 1.5

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The angle of inclination of the bridge = tan⁻¹(1.5) = 56.31°

The height above the bottom at 3/4 from the higher cliff = The height above the bottom at 1/4 from the lower cliff = 98+ 18.03×sin(56.31 ) = 113 feet

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8 0
3 years ago
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Answer:

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