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e-lub [12.9K]
3 years ago
8

Please help me!! Very important

Mathematics
2 answers:
melomori [17]3 years ago
6 0
Hello,
Let x represent the total of jumps
y represent the total “ raised the roof "

Here are two equation:
3x+2y=50
x+y=19
To solve this, I would prefer to use substitution because it is the easiest way to do:
x+y=19
Times 3 from both side
3x+3y=57
-
3x+2y=50
=
y=7
x=19-7=12. As a result, Roxanne jumps 12 , and “ raised the roof ” 7 times. Hope it help!
givi [52]3 years ago
3 0
3x+2y=50
x+y=19
x=12, y=7
12 jumps, 7 "raise the roof"s
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3 0
3 years ago
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2 years ago
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