22.5/(x-6) + 22.5/(x+6) = 9
multiply by x-6
=> (x-6)22.5/(x-6) + (x-6)22.5/(x+6) = 9(x-6)
=> 22.5 + (x-6)22.5/(x+6) = 9(x-6)
multiply by x+6
=> (x+6)22.5 + (x+6)(x-6)22.5/(x+6) = 9(x-6)(x+6)
=> (x+6)22.5 + (x-6)22.5 = 9(x-6)(x+6)
distribute
=> 22.5x+6(22.5) + 22.5x - 6(22.5) = 9(x^2 - 36)
=> 45x = 9x^2 - 9(36)
=> 0 = 9x^2 - 45x - 9(36)
divide by 9
=> 0 = x^2 - 5x - 36
=> 0 = x^2 - 5x - 36
=> 0 = (x - 9)(x + 4)
x=9 and -4
Answer:
$1,190
Step-by-step explanation:
$850(0.25) = 212.50
$850(0.15) = 127.50
$850+212.50= 1,062.50
1,062.50+127.50= 1,190
The cost for a gallon of Moo Milk is $5.12
To find the cost of 8 fl. oz. of Moo Milk, the unit price must be found.
Therefore:
One gallon of liquid equals 128 fluid ounces.
5.12 ÷ 128 = 0.04
0.04 × 8 = 0.32
Therefore, the cost of 8 fluid ounces of Moo Milk is $0.032
I hope this helped - Maria S.
Multiply 20 and 12 then divide hope this helps :)
Answer:
$16.10
Step-by-step explanation:
Simply take the original cost and multiply it by the percentage to get the tip amount then add it all together.
14 × 15% = 2.1
14 + 2.1 = 16.1
This means the haircut would cost a total of $16.10.
