Answer:2.78×10^2
Step-by-step explanation:
22+52+424-220
=278
In standard form
=2.78×10^2
There are 32 nickels and 112 dimes. Hope this helps.
Answer:
y = 0.524m + b is the answerrrr
I would go about solving this by elimination because the x variables are already the same so all you would have to do is change one equation to the opposite signs and add them, so it would look like:
7y + 5x = 19
+ -3y - 5x = -7
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4y=12
y=3
