Answer:
a single burger costs $2, and a single soda costs $1.
Step-by-step explanation:
Lets set up a system of equations, with b for the burgers and s for the sodas
3b + 3s = 12
5b + 3s = 18
rewriting to switch the order of the equations
5b + 3s = 18
3b + 3s = 12
Then, we need to eliminate one variable to make it easier for us to find both, let's eliminate s by multiplying the entire bottom equation by -1
5b + 3s = 18
-3b - 3s = -12
adding the two together, we get
2b = 6
divide by 2 on both sides and we get
b = 3
THen, we take that value and plug it in to either of our first two equations (I'm using the first equation), and we get
3* 3 + 3s = 12
multiply
9 + 3s = 12
subtract 9 from both sides
3 s = 3
divide both sides by 3
s = 1
this means that a single burger costs $2, and a single soda costs $1.
Answer:
A. 18x + 15
Step-by-step explanation:
For this problem, we will simply simplify the given expression:
5(4x + 3) - 2x
= 5*4x + 5*3 - 2x
= 20x + 15 - 2x
= 20x - 2x + 15
= 18x + 15
Cheers
There were 4 musicians in the bad last month
Px - 45 = QX + 75
Px - Qx = 75 + 45 = 120
A. If P = - 45 and Q = - 75, then
- 45x + 75 x = 120
30x = 120 and x = 40
B. If P = 45 and Q = - 15, then
45x - 15x = 120
30x = 120
x = 40
D. If P = 15 and Q = 75, then
15x - 75x = 120
- 60x = 120
x = - 2
C. If P = 15 and Q = 15, then
15x - 15x = 120
0 = 120 which is absurd.
Hence, P = 15 and Q = 15 result in an equation with no solution.
Answer: 432
Step-by-step explanation:
Multiply your length times your width to get the area.