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3 years ago

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

Jack is 8 years old.

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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Answer:

The lengths of all three sides (in feet) are = 15, 14, and 18 feet

Step-by-step explanation:

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Let the one side be 'x'

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Side 3 = (x - 1) + 4

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