<span>if at 7 it was 65 and at 9 it was 55, that means temperature is decreasing by 5 per hour</span>
Answer:
The best approximation is the point 
Step-by-step explanation:
we know that
Observing the figure
The x-coordinate of the relative maximum belong to the interval ----> 
The y-coordinate of the relative maximum belong to the interval ----> 
see the attached figure to better understand the problem
therefore
The best approximation is the point
<span>Children younger than __<u>8</u>___ years of age must be restrained in an approved child passenger safety seats unless they are at least 4 ft, 9 inches in height.</span>
Yes because -5/4 = -1 1/4 as soon does 5/-4
Answer:
x = 4 + sqrt(73) or x = 4 - sqrt(73)
Step-by-step explanation by completing the square:
Solve for x:
(x - 12) (x + 4) = 9
Expand out terms of the left hand side:
x^2 - 8 x - 48 = 9
Add 48 to both sides:
x^2 - 8 x = 57
Add 16 to both sides:
x^2 - 8 x + 16 = 73
Write the left hand side as a square:
(x - 4)^2 = 73
Take the square root of both sides:
x - 4 = sqrt(73) or x - 4 = -sqrt(73)
Add 4 to both sides:
x = 4 + sqrt(73) or x - 4 = -sqrt(73)
Add 4 to both sides:
Answer: x = 4 + sqrt(73) or x = 4 - sqrt(73)
