Not sure if this is for algebra but this is the algebraic solution.
1. 5x + 1y = 25 (x meaning number of nickels) (y meaning number of pennies)
so 3 solutions could be, 5 nickels and 0 pennies, 4 nickels and 5 pennies, 3 nickels and 10 pennies.
2. First calculate how many days till the end of October, (31-14)= 17 days. then add 30 days for the entire month of November. Then add the 5 days that occurred in December. This will leave you with a total of 52 days.
Reading the question and adding everything up you'll get (15+3+1+1+4+1+15)
Which gets us our answer of 40 boys.
Hope I helped you.
Answer:
(B/4)-(a/4)=c
Step-by-step explanation:
Subtract a from both sides. You will be left with
B-a=4c
Divide 4 from both sides to isolate c
(B/4)-(a/4)=c
It would be B (530.7) because if you do 3.14 x 13 x 13 (Or to the second power) Then you get 530.66, the round to the nearest tenths