The cost of the mp3 player after the discount is $27.98.
<h3>
What is percentage?</h3>
A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by whole and multiply by 100.
Given
An mp3 player is on sale for 30% off the regular price of $39. 98.
The price of the mp3 player after the 30% is given
The cost of mp3 player after 30% discount is;
= $39.98 - $11.99 = $27.98
Hence, the cost of the mp3 player after the discount is $27.98.
To know more about percentage click the link givem below.
brainly.com/question/9776399
3x+y-2z=22
x+5y+z=4
x=-3z
3(-3z)+y-2z=22
-9z+y-2z=22
-11z+y=22
-3z+5y+z=4
-2z+5y=4
-11z+y=22
-2z+5y=4
-55z+5y=110
--2z+5y=4
----------------------
-53z=106
z=2
-2(2)+5y=4
-4+5y=4
5y=8
y=1.6
x=-3(2)
x=-6
x=-6
y=1.6
z=2
Answer:
D.
Step-by-step explanation:
You are splitting the equation up. (I don't really know how to explain it sorry)
Answer:
C
Step-by-step explanation:
Because I know