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Leokris [45]
3 years ago
11

I need help please and thank you

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
5 0

This is a false statement.

When you are solving using square roots, you need to be aware that answers can be both positive and negative. When we solve this, you see there are two possible answers.

x^2 - 9 = 0

x^2 = 9

x = +/- 3

While 3 is an answer, so is -3. If we square either of those numbers, we get 9, which will satisfy the equation.

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During swim practice Brandi swam 6 butterfly stroke laps and 8 freestyle laps. What is the ratio of freestyle laps to total laps
densk [106]

Answer:

4:7

Edit: I just saw the multiple choice options, in this case the right answer is:

<h2>8:14</h2>

but they're both equal

Step-by-step explanation:

The ratio you are looking for is

freestyle laps : (freestyle + butterfly) laps

so:

8 : (6+8)

8:14

Divide by 2 to simplify

4:7

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2 years ago
PLEASE HELP ALGEBRA 1 QUESTION
WITCHER [35]
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3 years ago
Rachel solved 50 problems of her Homework correctly and scored 62.5%. How many problems were there in the Homework?
maria [59]

Answer:

80

Step-by-step explanation:

50 problems/x total = 62.5%

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0.8 * 100 percent = 80 problems

3 0
3 years ago
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What does the 5 in the decimal .257 represent
Ira Lisetskai [31]

Answer: five hundredths

6 0
3 years ago
6) A cube has a volume of 125 mm3, what is its surface area?<br> Volume = s3<br> Area = 6x s2
Elena L [17]
<h3>~Geometry</h3>

Step-by-step explanation:

r³ = 125

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...

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A = 6 . 25

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#mathisfun

3 0
2 years ago
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