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Yanka [14]
3 years ago
15

Somebody please help me asap. I don’t understand anything.

Mathematics
2 answers:
yaroslaw [1]3 years ago
5 0

Answer:

The answer is 90!

Step-by-step explanation:

I just did this using my calculator.

elena55 [62]3 years ago
3 0

Answer:

90 feet

Step-by-step explanation:

10 inches x 9 feet = 90 feet

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Answer:

Question 21: -6-(-3)

Question 22: -7+12

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3 years ago
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WILL MARK YOU BRAINLIEST!!!!
Tema [17]

Answer:

A is not 3, 7

Step-by-step explanation:because it isint

4 0
3 years ago
I am not sure how sigma notation works, can somebody explain how to solve this? It isn't the second choice.
Masja [62]

Answer:

first answer is correct

Step-by-step explanation:

Hello, we want to write 2 + 4 + 6 + ... + 20

for n = 1, 2n = 2*1 =2

for n = 2, 2n = 2*2=4

for n = 3, 2n=2*3=6

etc

so

\displaystyle \sum_{n=1}^{10} {2n} = 2*1 + 2*2 +2*3+2*4+...+2*10=2+4+6+8+...+20

thanks

6 0
3 years ago
Simplify this equation<br> -5x+7&gt;22
Lana71 [14]

Answer:

<h2>x < - 3</h2>

Step-by-step explanation:

- 5x + 7 > 22

Move 7 to the other side of the inequality

- 5x > 22 - 7 \\  - 5x > 15

Divide both sides by - 5

\frac{ - 5x}{5}  >  -  \frac{15}{5}  \\ x >  - 3

Reverse the sign

We have the final answer as

<h3>x < - 3</h3>

Hope this helps you

4 0
3 years ago
When do you need to use two number lines to compare two fractions
OLEGan [10]
Depends on the fraction to determine your answer
4 0
4 years ago
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