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Licemer1 [7]
3 years ago
15

5(x+7)^2=245 find the steps

Mathematics
1 answer:
kakasveta [241]3 years ago
8 0

Answer:

0,-14

Step-by-step explanation:

5(x+7)²=245

divide both sides by 5

(x+7)²=49

Taking the square root of both sides

x+7=±7

Either x+7=7

subtract 7 from both sides

x+7-7=7-7

x=0

or

x+7=-7

subtract 7 from both sides

x+7-7=-7-7

x=-14

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A jar has 20 marbles: 3 green, 12 blue, 5 red.
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<u>The probability of choosing a red marble</u> = Number of red marbles / Total number of marbles

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<u>In simplest fraction form</u> = \frac{1}{4}

We are told in the question that you keep the red marble you choose, So this means the <u>total number of marbles</u> left reduces to 19

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Therefore, <u><em>the probability of randomly choosing a red and then a green marble is </em></u>

P (Red) x P(Green)

= 1/4  x 3/19

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To learn more, visit the link below:

brainly.com/question/22563776

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