Answer:
$(8967/n + 8.4)
Step-by-step explanation:
0.4nx + 0.6n(x+21) = 8967
nx + 12.6n = 8967
x = 8967/n - 12.6
x+21 = 8967/n + 8.4
Where n is the no. of balls
Example: if total balls were 300
n = 300
More expensive one would cost:
8967/300 + 8.4 = $38.29
Answer:
$36
Step-by-step explanation:
A percent is always out of 100, no matter what.
If you need to find the percent of something try cross multipling like this.
x/720 x 5/100
5 x 720 = 3600
100x = 3600
divide 3600 by 100
and you get 36
Answer:
Width: 8 inches
Length: 18 inches
Step-by-step explanation:
This is simple Systems of Equations:
{<em>wl</em><em> </em>= 144
{10 + <em>w</em> = <em>l</em>
Use Substitution:
<em>w</em>[10 + <em>w</em>] = 144
<em>w</em>² + 10<em>w</em> - 144 [Distribute, then move −144 to the left side of the equivalence symbol]
[<em>w</em> + 8][<em>w</em> - 18]
When set equal to zero, you will get the ABSOLUTE VALUE DIMENSIONS above, since we are specifically talking about DIMENSIONS. Dimensions are NON-NEGATIVE.
I am joyous to assist you anytime.
Answer is the first one im pretty sure