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Ludmilka [50]
3 years ago
14

Write the subtraction as an addition: (-27)-(-27)

Mathematics
2 answers:
valentina_108 [34]3 years ago
8 0

Remember two negatives gives you a positive. So:

-27 - (-27)    =   -27 + 27

Hope this helps you!

maksim [4K]3 years ago
3 0

Remember that when you subtract a negative number, you are really just adding the number. This is represented as:

a - (- b) = a + b


Thus, we can simplify

(-27) - (-27),

as

-27 + 27


Our answer is -27 + 27.

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Where does the energy stored in coal originally come from?
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Answer:

C . The sun

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4 0
2 years ago
a jogger ran 4 miles, decreased her speed by 1 mile per hour, and then ran another 5 miles. If her total jogging time was 2 1/20
LekaFEV [45]
Let the speed of the joker initially be x mi/hr
after reduction, the new speed will be: (x-1) mi/hr
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5 0
2 years ago
Algebra 1 Please help! thank u sm
olga_2 [115]

Answer:

1. Slyvia is wrong. You treat the numbers normally when dividing the left side, so 3.61/4.1 = .88. When dividing the exponents, you subtract the numerator from the denominator, so -11-7 = -18. So, you do have .88 * 10^-18, at first, but when you are working in scientific notation you want the decimal to be greater than so, which requires us to add an additional -1, to make it 8.8 instead of 0.88. This is because we want to move the decimal place left one more time. This results in our final answer being 8.8 * 10^-19, which is not Slyvia's answer.

2. Dylan's answer is correct. He subtracted the exponents correctly, then moved the decimal place over one place towards the left.

3. Ethan is wrong. He added the exponents, instead of subtracting. However, you cannot do this, because when you are dividing exponents, you must subtract.

Step-by-step explanation:

I have this acronym I learned called MADSPM, which has helped me a lot. I never learned it in Algebra, but I wish that they had taught it. Each letter corresponds with an exponent rule. If this makes sense, here is what it stands for:

When you multiply, you add.

When you divide, you subtract.

When there are parentheses, you multiply.

In this case, it was solely division. So, you just need to remember division = subtraction, when it comes to exponents.

Hopefully this helped. If you need me to explain it better, please let me know, and I will try. Thanks much & have a wonderful day!

7 0
2 years ago
Pleaseeee helpppp i’m not sure what this one is also please explain thanksss
AURORKA [14]
I think acute but I’m really not sure
5 0
2 years ago
P = 2L + 2W<br>How Do I Find W?
tatyana61 [14]
P = 2L + 2W ....subtract 2L from both sides
P - 2L = 2W ...divide both sides by 2
(P - 2L) / 2 = W .....can also be written  like (P/2) - L = W
3 0
2 years ago
Read 2 more answers
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