Answer:
unknown number = 1
Step-by-step explanation:
Let the unknown number be x.
(8×x)-6=2
8x-6=2
8x=2+6
=8
x=8÷8
=1
Hence, unknown number = 1.
The answer is K= 25
Simplify the equation using cross multiplication
200 = 8k
Swap the sides of the equation 8k = 200
8k = 200
Divide both sides of the equation by 8
Answer= k = 25
Answer:
your just adding numbers on the side that doesn't have all the spots filled in to equal the number with all the spots filled in
Step-by-step explanation:
<u><em>Answer:</em></u>
$5
<u><em>Step-by-step explanation:</em></u>
We can solve this using a system of linear equations. The equations are written like this:
3v + 9d = 75
5v + 10d = 100 (25 more than Dawn's total is 100)
V represents video games and d represents DVDs.
Let's isolate a variable, I'm going to isolate v in the first equation:
3v = -9d + 75
v = -3d + 25
Now that we isolated v we can plug it in to the second equation:
5(-3d + 25) + 10d = 100
-15d + 125 + 10d = 100
-5d + 125 = 100
-5d = -25
d = 5
Therefore, each DVD cost $5.
<u><em>Check:</em></u>
3v + 9(5) = 75
3v + 45 = 75
3v = 30
v = 10
5(10) + 10(5) = 100
50 + 50 = 100
100 = 100
<em>I hope this helps!!</em>
<em>- Kay :)</em>
Substitute x by five
-5+4=-1