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3 years ago

The sum of 38 and three times a number is 89

Mathematics

2 answers:

Darina [25.2K]3 years ago

8 0

the sum of 38 and three times a number is 89

(38+3n) = 89

subtract 38 from each side

3n = 51

divide by 3

n = 17

siniylev [52]3 years ago

7 0

38+3x=89 is the proper way to write this equation.

<em>Now to solve, first subtract 38 from both sides</em> (38-38 and 89-38)

3x=51

<em>Now divide both sides by 3</em>( 3x/3 and 51/3)

x=17

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Now, each of the semicircles has a diameter of 58m, and we have that the area of a circle is equal to:

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