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notka56 [123]
3 years ago
15

Alex sold wrapping paper rolls (r) as part of a school fundraiser. He earned a total of 156 reward points from his sales. Using

the equation 3r = 156, how many rolls of wrapping paper did Alex sell?
52
Mathematics
1 answer:
Eva8 [605]3 years ago
5 0

Answer:

52

Step-by-step explanation:

Alex earned 156 reward points for selling wrapping paper rolls.

Using the given equation

3r = 156

r = 156/3

r = 52

Alex sold 52 wrapping paper rolls

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What two numbers add to 9 and multiply to -70
Alborosie
X, y - the numbers

The numbers add to 9 and multiply to -70.
x+y=9 \\
xy=-70 \\ \\
y=9-x \\
xy=-70 \\ \\
\hbox{substitute 9-x for y in the second equation:} \\
x(9-x)=-70 \\
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4 0
3 years ago
Solve the equation using the distributive property and properties of equality
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