8x + 4y = 156
Answer:
[12, 15]
Step-by-step explanation:
{6x + 5y = 147
{8x + 4y = 156
-¾[8x + 4y = 156]
{6x + 5y = 147
{-6x-3y=-117← New Equation
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2y = 30
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22
y = 15 [Plug this back into both equations to get the x-coordinate of 12]; 12 = x
So, using the Elimination Method, what I did here was took the bottom equation and multiplied it by -¾, turning 8x to -6x, canceling out all x-terms.It does not matter which variable you choose to eliminate, as long as you know what you are doing.
I am joyous to assist you anytime.
A. laps per minute
B. laps
C. 1
D. 2
2) Gabriella swims 2 laps per minute. What is the unit rate?
A. 2
B. laps
C. 1
D. laps per minute
Answer to Number 1
Answer:
laps
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Answer to Number 2
2
Step-by-step explanation:
Because unit rates are the numbers in the mathematical problem and the rate units are the problem.
Example:
2 laps per minute
The rate unit is laps per minute and the unit rate is 2.
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-2(8/-10)-5=8(8/-10)+3