Equations
Solve
2x+8=12
2
Simplify
5x+2+3x+8
8x+10
Find the circumference with diameter of 8in. Round answer to the nearest tenth.
25.1 in
Solve the following.
5/8= x/32
20
Change the fraction to a decimal.
1/8
0.125
y/3+7=12
15
Simplify
-10y+2+4y-6
-6y-4
What is the circumference of a circle with a radius of 12 feet? Round answer to the nearest tenth.
75.4 ft.
On a map, two cities are 4 inches apart. The map scale is 1 inch: 25 miles. What is the actual distance between the cities?
100 miles
Change the decimal to a fraction.
0.35
35/100 or 7/20
-5y-4=-39
7
Simplify
-4(3x-2)
-12x+8
What is the area of a circle with a radius of 7 feet? Round answer to the nearest tenth.
153.9 ft squared
A bag contains 6 red, 4 blue, 3 green, 2 yellow, and 5 pinks marbles. What is the probability of reaching in a grabbing a blue or green? Write as a fractions and as a percent.
7/20, 35%
Solve
-3/4+1/2
-1/4
-6(2x-4)=24
0
Simplify
(5x+2)+(-3x+8)
2x+10
What is the area of a circle with a diameter of 12 inches? Round answer to the nearest tenth.
113 feet squared
A plumber charges an initial fee of $100 plus $25 per hour. Doe this represent a proportional relationship? Explain your reasoning.
No
Solve
-4/5* (-1 1/2)
12/10 or 1 1/5
8x+2-4x=-18
-5
Simplify
(6y+3)-(-2y+4)
8y-1
What is the radius of a circle with a circumference of 75 in. Round answer to the nearest tenth.
11.9 in
The ratio of girls to boys in a chess club is 5:4. There are 32 boys. How many girls were there in the club?
40 girls
5*(11.2+3.1)
71.5