Answer: The correct choice is answer D.
First, the first step of the transformation moves the unit 2 places to the right. The x-coordinate controls the movement left or right. Add 2 to the x-value moves it right 2 places.
Second, we have to reflect it over the x-axis. Taking the opposite of all of the y-values will reflect the shape over the x-axis. Therefore, we will use " - y" .
The number of pounds of copper in 120 pounds of brass is = 78 pounds of copper
<h3>Calculation of number of pounds of copper</h3>
The percentage of copper in the brass = 65%
Therefore the quantity of copper in the brass = 65/100= 0.65 pounds
This means that 1 pound brass contains = 0.65 pounds of copper
The quantity of copper in 120 pounds of brass = 120 * 0.65
= 78 pounds of copper.
Learn more about copper here:
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People who purchased good seats will be labeled as a
people who purchased poor seats will be labeled as b
therefore...
5a + 2b = 660
a + b = 210
Now, all that has to be done is for the system to be solved.
-2(a+b=210)
5a + 2b = 660
-2a - 2a = -420
3a=240
a= 80
*3 people purchased good seats.
Now we can plug that number in
5(80) + 2b = 660
400 + 2b = 660
2b = 260
b = 130
*130 people purchased poor seats
the other guy because i dont understand
Answer:
d
Step-by-step explanation:
if u substitute -4 in the equation it will give u a math error
