Proportional Relationships
A 24-inch candle burns down in 12 hours. At what rate does the candle burn, in inches per hour?
2 inches per hour
Solve:
25 + (-17)
8
Simplify the expression.
-(2k+10)
-2k - 10
or -2k + (-10)
Factor the expression completely.
4x + 6
2(2x +3)
The radius of a circle is 2.5 cm. Find the circumference to the nearest tenth.
15.7 cm
What are the requirements for a graph to show a proportional relationship?
Solve:
17 - (-14)
31
Simplify the expression.
-6(2m+5)
-12m - 30
Solve for n.
n + 6 = 8
n = 2
The radius of a circle is 6.5 ft. Find the circumference to the nearest tenth.
40.8 ft
Jordan bought 7 chicken wings for $14.00. If Jordan spent $36.00, how many chicken wings did he buy?
18 chicken wings
Solve:
55.6 - 82.9
-27.3
y+6-3-5y
-4y + 3
Solve for r.
3 = -8 + r
r = 11
The diameter of a circle is 9 ft. Find the circumference to the nearest tenth.
28.3 ft
The proportional relationship between two variables, y and z, is represented by y=11/2 z. What is the constant of proportionality from z to y?
11/2
Solve:
(-3/5) divided by (-3/2)
2/5
Combine like terms.
5 - 3x - 2x - 3y - 3 + 7y
2 - 5x + 4y
Solve for y.
33 - 4a = 73
a = -10
The radius of a circle is 25 m. Find its area to the nearest tenth.
1963.5 square meters
Jack measured a line to be 17.2 inches long. If the actual length of the line is 16.6 inches, then what was the percent error of the measurement, to the nearest tenth of a percent?
3.6%
Solve:
(1/8) - (11/72)
*Answer must be in simplest form.
(-1/36)
Rewrite in simplest terms.
5w - 9(-6w +9)
59w - 81
Solve for x.
47 = - (x/11) + 43
x = - 44
The diameter of a circle is 12 ft. Find its area to the nearest tenth.
113.1 square feet