Page 638 - Algebra 1

26.
(84)
27.
(84)
28.
(85)
29.
(8 0)
30.
(Inv 8)
Multi-Step Tony is sketching the view from the top of a 256-foot-tall observation tower and accidentally drops his pencil.
a. Use the formula h = -16t2 + 256 to make a table of values showing the height h
of the pencil, 1, 2, and 3 seconds after it is dropped.
b. Graph the function.
c. About how long does it take for the pencil to hit the ground?
Pendulums The time it takes a pendulum to swing back and forth depends on its length. The formula l = 2.45_t2 approximates this relationship. Graph the function
π2
using 3.14 for π. Use the graph to estimate the time it takes a pendulum that is
1 meter long to swing back and forth.
Write Explain how to determine whether a triangle with side lengths 5, 7, and 10 is a right triangle.
Multi-Step A bag of marbles contains 3 red, 5 blue, 2 purple, and 4 clear marbles. a. Make a graph that represents the frequency distribution.
b. What is the probability of drawing a red or a clear marble?
Given the following table, find the value of the constant of variation and complete the missing values in the table given that y varies directly with x and inversely with z.
y
x
z
1
1
3
3
2
4
2
9
2
2
12
Lesson 93 623