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kupik [55]
3 years ago
14

Twice Jack's age plus 5 is 21. Write and solve an equation. How old is Jack?

Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
7 0
2j+5=21
2j=16
j=8

<span>Jack is 8 years old.
</span>
Hope This Helped! :3
umka2103 [35]3 years ago
5 0
8 times 2 equals 16. 16 Plus 5 equals 21.
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What is the value of x in the equation 13 x minus 2 (8 + 5 x) = 12 minus 11 x?
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We have to find the value of "n" in the proportion

<em><u>Given proportion is:</u></em>

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Ugo [173]

Answer:

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One side of the triangle is one foot longer than the second side

<em>Side 2 = x - 1</em>

<em>The third side is four feet longer than the second side</em>

<em>Side 3 = (x - 1) + 4</em>

<em />

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<em>47 = x + (x - 1) + (x - 1) + 4</em>

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