Let Q= the number of quarters and D= the number of dimes.
Q+D= 40 coins
0.25Q+0.1D= $7.75
Rewrite equation 1 as: D = 40-Q and substitute into equation 2
0.25Q+0.1(40-Q)= 7.75 Simplify the left side
0.25Q+4-0.1Q= 7.75 Subtract 4 from both sides
0.25Q-0.1Q= 3.75 Convime like terms on left side
0.15Q= 7.75 Divide both sides by 0.15
Q=25 and D= 40-Q
D= 40-25 which is 15
So Jenna had 25 quarters and 15 dimes.
<span>To check multiply 25 x 25 and 15x10 which equals 625 and 150 this equals 775 so this is 7.75</span>
Answer:
y= 3/5x - 1
+1 +1
y+1 = 3/5x
((y+1)5) = 3x
divide by 3 both sides
x= (y+1)5 / (3)
hope that helps
Step-by-step explanation:
Answer:
.625 to get .875
Step-by-step explanation:
what is a rational number
Given:
The function f(x) describes the amount of money, in dollars, the club will earn for wrapping x presents.
To find:
The f(658).
Solution:
We have,
Substitute x=658 to find the value of f(658).
It means, the club will earn $1974 for wrapping 658 presents.
Therefore, .
24 bottles @ $3 = 8 bottles per dollar
12.5 cents per bottle
36 bottles @ $4 = 9 bottles per dollar
11.1 cents per bottle
