You would multiply the sales regular price by the percent and then subtract your answer from the regular sale price. For example, if something cost $499 and the sales price was 15% off, you would multiply 499 by 0.15 and then you would get 74.85.
The degree of a polynomial is the largest exponent on the variable.
For the given problem there is only one term with an exponent: 5x^2.
The exponent is 2, so the degree would be 2.
Answer:
$760.
Step-by-step explanation:
25 % = 0.25 as a decimal fraction.
Let x be the Cost price, then
x - 0.25x = 570
0.75x = 570
x = 570/0.75
x = 760.
1)
2x-y=16
-2y-x=-8
You need to solve on of the equations for x or y. I will solve the first equation for y.
2x-y=16
-y=-2x+16
y=+2x-16
Then you can substitute that y value for the y value in the second equation (2y-x=-8) can be written as 2(2x-16)-x=-8 since y=2x-16.
then you solve for x.
4x-32-x=-8
3x=24
x=8
therefore y=0 since 2(0)-8=-8
I will complete the second part of the question either in the comments or a new answer later when I have more time.
