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Natasha2012 [34]
3 years ago
9

He number line below represents which combined inequality?

Mathematics
2 answers:
zepelin [54]3 years ago
4 0

the answer is

the third one


Artist 52 [7]3 years ago
3 0

Answer:

C. 2 Less-than-or-equal-to x

Step-by-step explanation:

the answer on e2020

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Mary spent $15. If this was 20% of her earrings, how much money did she earned?
Fed [463]

Hi, I'm happy to help!

First off, we need to arrange an equation for what is being asked. 15 is 20% of her earnings and we don't know her total earnings.

15=20%×__

We can write this percentage as

15=0.2×__

We then change the equation to do the inverse operation, which is division, this makes it easier to solve.

15÷0.2=__

Now, we solve

15÷0.2=75

<u>She earned $75</u>

<u></u>

I hope this was helpful, keep learning! :D

4 0
3 years ago
How much simple interest would Kaitlin earn on $300 at 6% for 3 months?
faust18 [17]

Answer:

C) $54.00

Step-by-step explanation:

300*6%*3

300*0.06*3

which is $54.

Hope this helps plz hit the crown :D

6 0
2 years ago
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Please help asap!!!!!!!!!!!!!!!!!!!!
Olenka [21]

Answer:

−

2

g

+

20

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1

Step-by-step explanation:

7 0
3 years ago
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What is 87.5% of 8?
gtnhenbr [62]

Answer:

7

Step-by-step explanation:

Convert 87.5% to a decimal.

87.5%/100%=.875

Multiply it with 8 to get 7

.875*8=7

7 0
3 years ago
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In monitoring lead in the air after the explosion at the battery factory, it is found that the amounts of lead over a 7 day peri
Andrew [12]

Answer:

MOE=\pm \ 1.41

Step-by-step explanation:

-Given that \sigma=1.91, n=7

-We determine the z-value corresponding to the 95% confidence level:

z_{\alpha/2}=z_{0.025}=1.96

-The margin of error is the degree of error from the real value and is calculated as follows:

MOE=\pm z_{\alpha/2} (\frac{\sigma}{\sqrt{n}})\\\\=\pm z_{0.025}\times\frac{\sigma}{\sqrt{n}}\\\\=\pm 1.96\times \frac{1.91}{\sqrt{7}}\\\\=\pm 1.41

Hence, the margin of error is \pm 1.41

7 0
3 years ago
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