Answer:
The answer is
.
Step-by-step explanation:
This is because when you multiply them together you get
,
,
, and 
When you add the like terms you get,

When we are dealing with fractions and decimals.
Answer:
x = 15.49
Step-by-step explanation:
a2+b2=c2
11^2+x^2=19^2
121 =x^2 = 361
x^2 = 240
x = 15.49
Answer:
$11,520
Step-by-step explanation:
4 * 8 * 12 = 384 cu ft.
384 * 7.5 = 2880 gallons
There are 16 cups in a gallon
2880 * 16 = 46,080 cups
46,080/2 * .50 = $11,520
It would be simplified to 27