Y = 5x - 13 ----------- (1)
5x + 2y = 19 --------- (2)
Sub (1) into (2):
5x + 2(5x -13) = 19
5x + 10x - 26 = 19
15x = 19 + 26
15x = 45
x = 3 -------- sub back into (1)
y = 5(3) - 13
y = 15 - 13
y = 2
Ans: x = 3, y = 2
Answer:
b.
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Step-by-step explanation:
i took the test
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete, as there are no options to select from.
However, a general explanation is as follows.
Given
![2\ cups = 1\ pint](https://tex.z-dn.net/?f=2%5C%20cups%20%3D%201%5C%20pint)
Required
Is
a correct expression?
Let
![c = cups](https://tex.z-dn.net/?f=c%20%3D%20cups)
![p = pint](https://tex.z-dn.net/?f=p%20%3D%20pint)
So:
![2\ cups = 1\ pint](https://tex.z-dn.net/?f=2%5C%20cups%20%3D%201%5C%20pint)
becomes
![2 * c = 1 * p](https://tex.z-dn.net/?f=2%20%2A%20c%20%3D%201%20%2A%20p)
![2c = p](https://tex.z-dn.net/?f=2c%20%3D%20p)
Divide both sides by 2
![c =\frac{1}{2}p](https://tex.z-dn.net/?f=c%20%3D%5Cfrac%7B1%7D%7B2%7Dp)
Hence:
is incorrect
Simply put, its a LONGER way to do division. You take a longer time on showing the work.