D. x-6
That is the correct answer.
Well in a right angle triangle, we know that angle C would be 90 degrees, we can check this by solving for X and seeing if the expression 2x will give us a value of 90 degrees.
So 2x = 90
X = 90/2
X = 45 degrees.
90 = 2x
90 = 2(45)
90 = 90.
Thus since the equation is true, X = 45 degrees, we can also solve for the remaining angles knowing what X is.
Answer:
$1500
6 hours
Step-by-step explanation:
There is no one off fee, therefore we got (0,0) a starting point.
(1,125) is representing the first hour of rent, so 1 hour rent costs $125.
There is a direct relationship between the time and rental fee.
<u>As a function is will be:</u>
- f(x) = 125x, where f(x) is the total amount and x is the time in hours
<u>For x= 12, we get:</u>
<u>So, if f(x) = 750, then:</u>
- 750 = 125x
- x= 750/125
- x= 6 hours
Step-by-step explanation:
x⁴ − 8x² − 48 = 0
(x² + 4) (x² − 12) = 0
x = ±2i, x = ±√12
