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PIT_PIT [208]
2 years ago
13

a coin collection consists of nickels, dimes, and quarters, and has a total value of $3.30. there are three times as many nickel

s as quarters. how many of each kind are there if the number of dimes is three less than the average number of nickels and the number of quarters?
Mathematics
1 answer:
Alexeev081 [22]2 years ago
5 0

Answer:

18 nickels, 9 dimes, and 6 quarters.

Step-by-step explanation:

Just use the guessing method. I started with 15 and then went to 18. and got it right. A nickel a worth five cents so 18 times 5 = 90 cents. 18/3 is 6 and 18+6=24. 24/2 is 12 and 12-3 is 9. A dime is worth 10 cents so 9 times 10= 90 cents. A quarter is worth 25 cents and 6 times 25=150. 150+90+90+330        If you get this right can i please have brainliest

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3 years ago
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Answer:

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A culture started with 3000 bacteria. After 4 hours, it grew to 3,600 bacteria. Predict how many bacteria will be present after
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A = A_ob^t
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Now we solve for b
3600 = 3000b^4
\frac{3600}{3000} = \frac{3000b^{4}}{3000}
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\sqrt[4]{\frac{6}{5}} = \sqrt[4]{b^4}
\sqrt[4]{\frac{6}{5}} = b

Now that we have found b, we can use the equation A = 3000b^t to predict how many bacteria will be present after 10 hours.
b = \sqrt[4]{\frac{6}{5}}
t = 10
A = 3000b^t
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Answer = 4732



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