Mackenzie has a loyalty card good for a 20% discount at her local hardware store. What would her total in dollars and cents be,
2 answers:
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Answer:
(x, y) = (3, 5/2)
Step-by-step explanation:
I'll solve by elimination here. If you invert the second equation and add it to the first, 2y and -2y would cancel out.
Now just add those from top to bottom.
Nothing else needs to be done for that part. Now, you can pick either equation and use the known value of x to solve for y.
(x, y) = (3, 5/2)
Answer:
Alyssa work at job A
Step-by-step explanation:
Let
x------> the number of hours at work A
y------> the number of hours at work B
we know that
-----> equation A
-----> equation B
substitute equation A in equation B