Answer:
A. 0.72
Step-by-step explanation:
When the ball hits the ground, h = 0.
0 = -16t² + 6t + 4
0 = 8t² − 3t − 2
Solve with quadratic formula:
t = [ 3 ± √(9 − 4(8)(-2)) ] / 16
t = (3 ± √73) / 16
t = 0.72
f(x) = \(\frac{1}{20}\) for 0 ≤ x ≤ 20. x = a real number. The graph of
f(x) = \(\frac{1}{20}\) is a horizontal line. However, since 0 ≤ x ≤ 20, f(x) is restricted to the portion between x = 0 and x = 20, inclusive.
This shows the graph of the function f(x) = 1/20. A horiztonal line ranges from the point (0, 1/20) to the point (20, 1/20). A vertical line extends from the x-axis to the end of the line at point (20, 1/20) creating a rectangle.
f(x) = \(\frac{1}{20}\)for 0 ≤ x ≤ 20.
The graph of f(x) = \(\frac{1}{20}\) is a horizontal line segment when 0 ≤ x ≤ 20.
The area between f(x) = \(\frac{1}{20}\) where 0 ≤ x ≤ 20 and the x-axis is the area of a rectangle with base = 20 and height = \(\frac{1}{20}\).
\(\text{AREA}=20\left(\frac{1}{20}\right)=1\)
Let w = the walking time
the total time is given as 1 hr, therefore (1-w) = running time
Walking dist and running dist is the same
Write a distance equation: dist = speed * time
3w = 9 (1-w)
3w = 9 - 9w
3w + 9w = 9
12w = 9
w = 9/12 = 3/4 hrs walking back
Answer:
-3
Step-by-step explanation:
Find the perimeter of the parallelogram and then the perimeter of the semi circle..add those and that’s the answer.
