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Anarel [89]
2 years ago
12

A scientist uses a camera to study the stars.

Mathematics
1 answer:
Ugo [173]2 years ago
7 0

Answer:

sure

Step-by-step explanation:

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A balloon has a circumference of 28 in use the circumference to approximate the surface area of the ballon to the nearest square
nikklg [1K]

The surface area of the balloon is 249 in².

<h3>What is the surface area of the balloon ?</h3>

A balloon has the shape of a sphere. The distance round the sphere is equal to the circumference of the sphere.

Circumference of the sphere = 2πr

Where:

  • r = radius
  • π = pi = 22 / 7

Radius - circumference / 2π

28 / ( 2 x 22/7) = 4.45 inches

Surface area of a sphere = 4πr²

4 x 22/7 x 4.45² = 249 in²

To learn more about the surface area of a sphere, please check: brainly.com/question/27267844

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1 year ago
A copy machine makes 36 copies per minute. How many copies does it make in four minutes and 45 seconds?
blsea [12.9K]

Answer: The copy machine makes 171 copies in 4 minutes and 45 seconds.

Step-by-step explanation:

Let's dissect the question. The copy machine makes 36 copies per minute.

36 per min.

To see how many copies it makes in 4 minutes and 45 seconds, we multiply 36 * 4.75. 45 seconds is 3/4ths of a minute, or 0.75 of a minute.

36 * 4.75=171

It makes 171 copies in 4 minutes and 45 seconds.

7 0
3 years ago
Find the angle measures given the figure is a rhombus
Inessa05 [86]

Answer:

we must be doing the same problems

Step-by-step explanation:

I need help on them as well

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3 years ago
Which number when multiplied by 2/3, results in a number greater than 2/3?
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D. Hope that is the answer

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The table gives some information about the heights of 30 plants.
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The answer would be c
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