X x=8-y y
-2 -2=8-y 10
-1 -1=8-y 9
and so on
x is the input and y is the output
12x + 4 + 14x - 2 + 100 = 180
26x + 102 = 180
26x = 78
x = 3
or you can do
12x + 4 = 14x - 2 (because <span>Δ ABC is isosceles)</span>2x = 6
x = 3
180 of 72% is 129.6. 180*72= 12960. Since 72% = .72, you need to put the decimal 2 places behind the decimal.
Answer:
One
Step-by-step explanation:
The graphs of these two equations intersect at one point. This means there will only be one solution to the system.
First, 8 times a number can be represented by 8x
Then, seven more than seven times that number can be represented by 7x+7
So if we need the difference between these two terms, it would be:
8x-(7x+7) (distribute the negative)
8x-7x-7 (combine like terms)
x-7
Hope this helps