Answer:
<u>29</u> $1 bills and <u>14</u> $5 bills.
Step-by-step explanation:
Let 
be the number of $1 bills and 
be the number of $5 bills. With the information given, we can set up two equations:
1) 
2) 
There are two ways to solve it; with elimination or substitution. In this explanation, I will solve it with elimination.
To solve it with elimination, multiply the first equation by 5 to get:
Then, you can subtract the equation we just got by the second equation to get:
Thus, 
. To find y, just substitute x for 29 in the first equation to get:
. Therefore, 
. That means that there are 29 $1 bills and 14 $5 bills. You can check by substituting those values for x and y in either of the first two equations.
Hope this helps :)
Answer:
80
Step-by-step explanation:
5 * 8 * 2
Answer:
The width is 10 inches.
x(x + 3) = 70
x² + 3x = 70
Subtract 70 from both sides.
x² + 3x - 70 = 0
Factor the trinomial
(x - 7)(x + 10) = 0
Set each equal to zero.
x = - 7, - 10
Distance can't be negative so x = 7 is the right one. Now we plug in for the length (x + 3)
x + 3
7 + 3
10
Step-by-step explanation:
