Answer:
x = 6
Step-by-step explanation:
Equation: <em>x² - 12x + 36 = 0</em>
Quadratic formula: <em>ax² + bx + c = 0 --> x = (-b ± √(b² - 4ac))/2a</em>
Substitute: <em>x = (12 ± √(12² - 4 * 36))/2</em>
Multiply: x = (12 ± √(144 - 144))/2
Subtract: x = (12 ± 0)/2
Solve: x = 6
The average change in temperature per hour was 6 degrees
Explanation- There are 9 hours between 6:00AM and 3:00PM.
As well as a increase of 54 degrees in those 9 hours.
54/9=6
:)
Average rate of change refers to the slope of a function/equation.
To solve this, plug in for both x values and calculate the average, or mean.
x = 1
f(1) = 5(2)^1
= 5(2)
= 10
x = 5
f(5) = 5(2)^5
= 5(32)
= 160
Now, you calculate the average:
10 + 160 = 170
Divide by 2 and you get 85.
b= 63 and that is your answer
