Solve for the Variable
3x + 2 = 11
x = 3
If a circle has a diameter of 7 what is the radius?
The radius is 3.5
-4 + 8 + (-12)
-8
A school has a ratio of 3 boys for every 2 girls. If there are 72 boys in the school how many girls would there be?
There would be 48 girls
3x + 7y - 8x + 11x
6x + 7y
-5x - 7 = 53
x = -12
If a circle has a radius of 4 inches, what is the circumference? (use 3.14 for pi)
25.12 inches
3 - 8 - (-13) - 11
-3
You are running 13 miles per hour, if you run at that speed for a half hour how far would you of ran?
6.5 miles
What is 30% of 20?
6
4/x - 8 = 3
x = 44
A circle has a radius of 6 inches, what would the area be? (Use 3.14 for pi)
113.04 inches squared
When multiplying or dividing negatives, if you have an odd number of negatives in your problem will your solution be positive or negative?
Negative
A person 6 ft tall casts a shadow that is 2 ft long, a building near by has a shadow that is 9 feet long. How tall is that building?
27 ft tall.
7(2k + 1) - 4k
10k + 7
3(2x + 1) = 57
x = 9
A circle has a diameter of 10 cm, what would the area of the circle be? (Use 3.14 for pi)
78.5 cm squared
-6 x 4 / (-8)
3
A map uses a scale that every 1.5 inches represents 14 miles. If your house is 9 inches from Two Harbors on the map how far is your house from Two Harbors in miles?
84 miles from Two Harbors
Find the mean:
6 2 3 7 1 3 8 4
4.25
-5(3x - 5) = -85
x = 4
A cylinder has a height of 12 ft and a radius of 7 feet. What is the volume of the cylinder? (Use 3.14 for pi)
1,846.32 ft squared.
-56 / 7 + (-13) x 5 - (-9) x 9 + 1
9
A floor plan uses a scale that 1.5 inches represents 2 feet for the house. If a room on the model has a length of 18 inches and a width of 12 inches, what is the area of the actual room?
256 square feet
360pi or 1130.4 units^3