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EleoNora [17]
3 years ago
5

Please help thanks! Brainliest

Mathematics
2 answers:
KatRina [158]3 years ago
4 0
9 x 9 = 81
81 - 21 = 60
60 / -6
10
daser333 [38]3 years ago
4 0

Answer:

-10

Step-by-step explanation:

\frac{9^{2} -21}{-6} \\=-\frac{81-21}{6} \\=-\frac{60}{6} \\=-10

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Alenkasestr [34]

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22

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6 0
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What happens to energy during a change of state? Why is it a physical change?​
Flura [38]

Answer & Explanation:

Energy is heat. For example, if you boil a cup of water it has more energy than   a cup at room temperature. It is considered a physical change because its properties do not change only the state of matter. On the other hand, if wood burns then that is a chemical change because it changes its chemical properties. Please rank as Brainliest if this helps! Thank you!

5 0
3 years ago
catriona earned 16 more stickers than Peter. she earned 35 stickers. how many stickers did Peter earn?​
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Answer:

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5 0
3 years ago
Find tsa of cylinder whose height is 7cm and radios 4cm.​
ki77a [65]

Answer:

Answer

Let height =h

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=15cm.

Step-by-step explanation:

6 0
3 years ago
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