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dsp73
3 years ago
6

What is the surface area in square centimeters of the cube with all sides 9 cm

Mathematics
1 answer:
Dima020 [189]3 years ago
3 0
Answer 486sq cm

You do 9x9 and get 81, then multiply 81x6 for the 6 sides of the cube
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Answer:

128

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Step-by-step explanation:

3 0
2 years ago
Evan spent 20 hours doing homework last week. This week he spent 25 hours doing homework. He says that he spent 125% more time d
pogonyaev

Answer:

He isn't correct. He spent 25% more time this week than the previous one.

Step-by-step explanation:

We will make proportion.

first week 20 hours  is 100%

second week 25 hours is x%

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When we multiply external and internal members we get:

20x =25 · 100 =>  x = 2500/20 = 125%

We conclude the following:

Evan spent 125% of the time in hours compared to the last week or Evan spent 25% more time this week than the previous one.

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7 0
3 years ago
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Answer:

Step-by-step explanation:

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6 0
3 years ago
What is the area of this regular pentagon that has been divided into five congruent triangles?
Len [333]

Answer:

120 cm^2.

Step-by-step explanation:

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So area of the pentagon = 5 * 24

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3 years ago
Fred got a score of 80 on the test. Enter a division sentence using negative numbers where the quotient represents the number of
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.

Step-by-step explanation:

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