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lisabon 2012 [21]
3 years ago
15

Find the exact solution of 3x^2+7=28

Mathematics
1 answer:
Softa [21]3 years ago
4 0

\text{Solve:}\\\\3x^2+7=28\\\\\text{Subtract 7 from both sides}\\\\3x^2=21\\\\\text{Divide both sides by 3}\\\\x^2=7\\\\\text{Square root both sides}\\\\\sqrt{x^2}=\sqrt7\\\\x=\pm\sqrt7\\\\\boxed{x=\sqrt7\,\,or\,\,x=-\sqrt7}

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Answer:

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Step-by-step explanation:

so 5/a=60

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3 years ago
Toa has 4 dimes a 12 nickels.Gail has 2 dimes and 3 nickels. What would be the ratio of dimes to nickels if they put these toget
Free_Kalibri [48]

Answer:

2 : 5

Step-by-step explanation:

Ratio expresses the relationship between two or more numbers. It shows the frequency of the number of times that one value is contained within other value(s).

We are to determine the ratio of dimes to nickels

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2 years ago
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Bas_tet [7]

Answer:

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Step-by-step explanation:

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7 0
1 year ago
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Sindrei [870]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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prisoha [69]

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Parentheses

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Hope this helps <3

8 0
2 years ago
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