Solve for b A = / frac{a+b}{2}

When playing American roulette, the croupier (attendant) spins a marble that lands in one of the 38 slots in a revolving turntable. The slots are numbered 1 to 36, with two additional slots labeled 0 and 00 that are painted green.

Sunny earns $12 per hour delivering cakes. She worked for x hours this week. Unfortunately, she was charged $15 for a late delivery on Tuesday. How much money did Sunny earn this week?

20 less than the sum of 23 and 4

Industrial chemicals are stored in 55-gallon drums. The radius of the drum is 12 inches, and the height is 32 inches. Determine the surface area of the drum.

Daphne replaced light bulbs in her mothers store. She had 3/4 of a box of light bulbs. Daphne used 1/3 of the bulbs. How many light bulbs might be in a full box? What fraction of the box of light bulbs was left?

A lottery game has balls numbered 3 through 17. If a ball is selected at random, what is the probability of obtaining an odd numbered ball or the number 11 ball?

Robert bought 2 movie tickets for $10. Deion spent $20 on 4 movie tickets

What is the formula of the area of any triangle

Two groups of tourists each have 60 people. If 3/4 of the first group and 2/3 of the second group board buses to travel to a museum, how many more people in the first group board buses than in the second group?

How do you write this polynomial in factored form? x^3+7x^2+10x