1 answer:
Answer:
11 pennies
33 nickels
7 quarters
Step-by-step explanation:
Let x be the number of pennies, then the number of nickels is 3x.
There are 51 coins in total, so the number of quarters is 51 - x - 3x = 51 - 4x.
Amounts:
- in pennis - x cents;
- in nickels - 5(3x) = 15x cents;
- in quarters - 25(51 - 4x) cents.
Tota amount = $3.51 = 351 cents.
Hence,
11 pennies
33 nickels
7 quarters
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Answer:
x = 1.24
Step-by-step explanation:
In order to get that x down from its current position of exponential, you need to take either the log or the natural log of both sides. The power rule tells us that we can then pull the exponent down in front. So let's take the natural log of both sides:
We can bring the x down in front to give us:
ln(83) = x ln(35)
The right side of this is "stuck" together by multiplication, so we can undo that multilication by division of the ln(35). That leaves us with just x on the right:
Do this on your calculator and find that x = 1.24