Answer:
Step-by-step explanation:
If all 21 coins were dimes, she'd have $2.10. But she has 90 more cents than that. Now for each coin that's a quarter, not a dime, she has 15 cents more. 90/15= 6. So there are 6 quarters, and 21-6 = 15 dimes.
Now we do it backwards to see if it's right. 6 quarters is $1.50, 15 dimes is $1.50, add those together and you get $3. So it's right. 6 quarters, 15 dimes.
Answer:
The answer is 75.4
Step-by-step explanation:
I hope it helps
MP
PM
Assuming your n is on a side
Answer:
1875.6 in³
Step-by-step explanation:
(⅓×3.14×8²×12) + (⅔×3.14×8³)
1875.626667 in³
Answer:
9. 
10. 
Step-by-step explanation:
9. Given the sequence
In this sequence,
Note that
then the common difference in this sequence is 
You have
then the explicit formula is
10. Given the sequence
In this sequence,
Note that
then the common difference in this sequence is 
You have
then the recursive formula is
