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Cloud [144]
3 years ago
5

(I will give brainliest, a thanks, 30 points, and 5 stars if you can answer these 2 questions)

Mathematics
1 answer:
dimulka [17.4K]3 years ago
4 0

Answer:

1. 9 pi, 2. 121 pi

Step-by-step explanation:

The formula for circumference is pi d. So for the first question the radius would be three. The you do pi r ^2 for area so 3 times pi squared. Which is 9 pi. For the second you will do the same thing you will do 22 pi divided by 2 which is 11 pi then you will square 11pi and get 121 pi

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Which expressionis equal to (-7x+5.1y)-(-9x+5.3y)
Furkat [3]

Answer:

The simplified expression for the given expression will be:

c. 2x-0.2y

Step-by-step explanation:

Given expression:

(-7x+5.1y)-(-9x+5.3y)

To simplify the expression.

Solution:

In order to simplify the expression, we will first remove the parenthesis by reversing the signs of the terms inside the parenthesis which lies after a negative sign out side the parenthesis.

<em>This is because negative multiplies to a negative to give a positive and negative multiplies to a positive to give a negative.</em>

So, we have:

⇒ -7x+5.1y+9x-5.3y

Combining like terms

⇒ -7x+9x+5.1y-5.3y

<em>The like terms can be evaluated as</em>

-7x+9x=2x

5.1y-5.3y=-0.2y

Thus, the simplified expression will be:

⇒  2x-0.2y

7 0
3 years ago
Pls help soon, my life depends on this test!!:))
Morgarella [4.7K]
Hello,
Please, see the attached file.
Thanks.

5 0
3 years ago
Read 2 more answers
Kylie Matsumoto is a set designer. Her annual salary is $ 45,320. Kylie's semimonthly salary is $ _________.
serg [7]

3776.67 is the answer. Since 45,320 divided by 12 = 3776.67 (rounded to the nearest tenth)

7 0
3 years ago
The question is in the image! Please help if u can its due really soon
maw [93]

Answer:

5.4

Step-by-step explanation:

3x+38=10x

-3x         -3x

38=7x

x=5.4

Brainliest pleaseeeeeee

7 0
3 years ago
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Ill mark brainlist plss help
Luden [163]
The answer is 222ft.
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