First, divide each amount by the downloads.
6.25/5 = 1.25 for each download
17.40/12 = 1.45 for each download
The online music store that offers 5 downloads for 6.25 is the better deal by 0.20 cents.
hope this helps
Let adults = X
Then children would be 2x ( Twice as many as adults, means 2 times the amount of adults)
Now we have adults plus children equal 36:
X + 2X = 36
2X + X = 3x
Now we have 3X = 36
Divide both sides by 3 to solve for X
X = 36/3
X = 12
2X = 2*12 = 24
There were 12 adults and 24 children
Answer:
Step-by-step explanation:
volume of concrete=162×12×4/12=648 ft³
Answer:
Step-by-step explanation:
7(x-4)-3(x+5)
7x-28-3x-15
4x-43
from first equation x = 7 + 2y. Substitute this into second equation:-
2(7 + 2y) + 5y = 5
9y = -14 + 5 = -9
y = -1
Plug this into the first equayion
x - 2(-1) = 7
x = 5
Answer is x = 5, y = -1 .