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dusya [7]
3 years ago
15

Can somebody help me with this?

Mathematics
1 answer:
Nina [5.8K]3 years ago
6 0
Its a little blurry, but I hope this helps. Lets just say the number on the bottom is 2b, and the one on the side is b.  You would have a total of (4)b's, and (2)2b's.      Answer: 4b+2(2b).   The 4 b because you have 4 sides of that equal length, and the same with the 2b's
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How would you write 105% as a decimal.
Luba_88 [7]

Answer:

1.05

Step-by-step explanation:

number starts as .105

slide the decimal over 1 space

1.05

6 0
3 years ago
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A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a 15% hydrogen per
FromTheMoon [43]
Your two equations are at the top, in the box is what each variable represents. Below the box is total liters of the 15%, which is going to equal the total liters for 10% plus the total liters for 25%. Make your percentages into decimals. There’s a total of 30 liters so, x+y needs to equal 30. Isolate a variable, I chose y, you can do either or (isolating x would be more math). Y is going to equal 30-x, substitute that for the Y in the second equation, then you need to distribute 0.25 into 30-x. Then it’s simple math, subtract 7.50 from both sides, add like gets, divide both sides by -0.15, making x=20.

8 0
2 years ago
The difference of 7 and a number n​
Effectus [21]

Answer:

7 - n

Step-by-step explanation:

4 0
3 years ago
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Help !!!! rectangle pqrs has side lengths of 7 and 3 as shown on the grid below
Inessa05 [86]
Even though you have reflected this triangle, your side length would still be the same. Explanation: Reflection is when you take an object on your coordinate plain and put it somewhere else on the plain. So if side QR is 3 than side Q’R’ would also be 3. Hope this helps!
3 0
3 years ago
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Problem Page Ann will run more than 38 miles this week. So far, she has run 21 miles. What are the possible numbers of additiona
krok68 [10]
She has run 21 miles already. Let t be the number of additional miles added on. 

In total, she has run t+21 miles 

This is going to be set greater than 38 since "Ann will run more than 38 miles"

So we have this inequality

t+21 > 38

we solve for t by subtracting 21 from both sides

t+21 > 38
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t+0 > 17
t > 17

The final answer is t > 17

which means that the possible additional number of miles she could run is anything larger than 17. So t = 18 is one possibility. 
8 0
3 years ago
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