A gumball machine has 280 red gumballs. If the red gumballs are 50% of the total number of gumballs, how many gumballs are in the gumball machine? A. 330 B. 230 C. 560 D. 140

Using the until circle, what is the exact value of tan 2pi/3

Ann worked 20 hours and made $200. how much money does she make per hour?

Robert has attended 32 out of 40 after-school band practices this year. Based on his record of attendance, which is the probability that Robert will attend band practice in the future?

Amy has 16 gift bags. She fills 8 gift bags with wishtles. How many gift bags are not filled with whistles?

Solve the system of equations by substitution. 4x-3y=18 x+2y=-1

The moon has a radius of 1736 1736 kilometers. The earth has a radius of 6371 6371 kilometers. How many times as large is the volume of the Earth as the volume of the moon, rounded to the nearest whole number?

You want to go to europe 5 years from now, and you can save $3,800 per year, beginning one year from today. you plan to deposit the funds in a mutual fund that you think will return 8.5% per year.

What percent of $257.00 is $12.85? Round answer to the nearest tenth of a percent.

Convert each rate using dimensional analysis. Round to the nearest tenth, if necessary. 45 mi/h = ___ ft/s a. 66 c. 26.4 b. 15.6 d. 19.2

Marsha wrote three $15 checks and six for $75 each. Which of the following expressions represents the change in her bank account? 3 (-15) + 6 (-75) -3 (-15) + - 6 (-75) -3 (15) + - 6 (75) 3 (-15) + - 6 (-75)