Answer:
21/2
Step-by-step explanation:
12x+32=12x-7 how many solutions are there to the equation?
1 answer:
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Answer:
Each pizza costs $12.
Each drink costs $2.
Step-by-step explanation:
This question can be solved using a system of equations.
I am going to say that:
x is the cost of each pizza.
y is the cost of each drinks.
The Talbot family got 2 pizzas and 4 drinks for $32.
This means that
The Martinez family got 3 pizzas and 8 drinks for $52.
This means that
Using the addition method, multiplying the first equation by -2.
-4x - 8y = -64
3x + 8y = 52
-4x + 3x - 8y + 8y = -64 + 52
-x = -12
x = 12
Each pizza costs $12.
2x + 4y = 32
2x + 4y = 32
4y = 32 - 2x
4y = 32 - 2*12
4y = 8
y = 2
Each drink costs $2.
Answer:
133 girls
Step-by-step explanation:
Total members = x
Number of boys =
Number of girls =
Number of boys + Number of girls = total members
x = 171
Number of boys = = 2 * 19 = 38
Number of girls = 38 + 95 = 133