12a + (-7) + 12a=13 what is the value of a

If the sin 30° = one half, then which statement is true? cos 150° = 0, because the angles are supplements cos 60° = one half because the angles are complements cos 150° = 1, because the angles are supplements cos 60° =

Find the nth term of 14,23,32,41 ...

Ronna is recording what kind of shoes people are wearing at the mall. Out of 13 people she has seen, 2 are wearing boots. What is the experimental probability that the next person Ronna sees will be wearing boots?

A prop for the theater club's play is constructed as a cone topped with a half-sphere. What is the volume of the prop? Round your answer to the nearest tenth of a cubic inch. Use 3.14 to approximate pi.

Hannah completed 3/4 of her homework on Saturday morning and 1/8 ofit on Saturday night. How much more homework does she need to complete?

Sam has three identical tennis balls with a diameter of 2.7 inches. Determine the volume of all three tennis balls?

The base of a Mary-go-round spans an area of about 153.86 square meters. How long is the diameter

What number is 70% of 60? (Use only whole numbers)

What's the greatest common factor between 18 and 100

Factor: 12x^5 + 6x^2 - 18