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Luba_88 [7]
3 years ago
15

What is the diameter of a circle with a 66 inch circumference??

Mathematics
1 answer:
raketka [301]3 years ago
6 0

C = 2\pi r\\\\\frac{C}{2\pi } = \frac{2\pi r }{2\pi } \\\\\frac{C}{2\pi } = r\\\\\\\frac{66}{2\pi } = r\\\\21.01 = r

Therefore, the diameter of the circle is about 21.01 in.

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Use the bar graph. Astronauts installed 15 new tiles on the outside of the space station they spent 390 minutes on the task. eac
11111nata11111 [884]

Answer:

11. It will take about 26 minutes to install a singular tile.

12. It will take about 10 more minutes to install a light than it does to install a cable.

Step-by-step explanation:

11. Since installing 15 new tiles took a total of 390 minutes and each tile took the same amount of time, you can divide the total amount of time by the number of tiles.

390/15= 26 minutes

It will take about 26 minutes to install a single tile.

12. By looking at the chart it can be assumed that installing a light takes about 22 minutes since it is in the middle of 20 and 24 minutes. Installing a cable only takes 12 minutes.

22-12= 10 minutes

It takes about 10 minutes longer to install a light than it does a cable.

5 0
3 years ago
SOMEONE PLEASE HELP!!! I’LL MARK BRAINLIEST
meriva

Answer:

1st answer a 44

Step-by-step explanation:

7 0
3 years ago
What is the period for the function y = -4 cos (5x +3)? (4.3)
BlackZzzverrR [31]

The periodicity of function is \frac{2 \pi}{5}

<em><u>Solution:</u></em>

Given that we have to find the period of function

<em><u>Given function is:</u></em>

y = -4 + cos(5x+3)

<em><u>Use the below formula:</u></em>

\mathrm{Periodicity\:of\:}a\cdot \cos \left(bx\:+\:c\right)\:+\:d=\frac{\mathrm{periodicity\:of}\:\cos \left(x\right)}{|b|}

Thus,

Peridocity\ of\ cos(5x + 3) - 4 = \frac{\text{periodicity of cos(x)}}{5}

Now find the periodicity of cos(x)

We know that,

periodicity of cos(x) = 2 \pi

Therefore,

Peridocity\ of\ cos(5x + 3) - 4 = \frac{2 \pi}{5}

Thus the periodicity of function is \frac{2 \pi}{5}

4 0
3 years ago
Jonas builds a snow fort. He tells his friends it is 0.80.80, point, 8 meters tall inside, but he rounded the height to the near
laiz [17]

Answer:

D. 0.77

Step-by-step explanation:

Jonas builds a snow fort. He tells his friends it is 0.8 meters tall inside, but he rounded the height to the nearest tenth. Which could be the height of the snow fort before Jonas rounded it?

Check all options by rounding to the nearest tenth

A. 0.89 m

= 0.9 m

B. 0.74 m

= 0.7 m

C. 0.85

= 0.9 m

D. 0.77

= 0.8 m

Note: Digits 0 - 4 are rounded down while digits 5 - 9 are rounded up

Rounding to the nearest tenth means having one digits after the decimal point

5 0
3 years ago
What is the missing number in this sequence: –1, –2, –4, , –16, –32
kipiarov [429]

Answer:-8

Step-by-step explanation: you add -1+ -1, to get -2, then -2+-2, to get -4 and so forth.

5 0
3 years ago
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