Solve for the variable a in this equation: c = 8πab

Luke rides his bike 20 miles in 4 hours. If he rides at a constant speed, select the answers here that are equivalent ratios to the speed he rides. A: 30 miles in 7hrs B: 25 miles in 6 hours C: 10 miles in 1 hr D. 15 miles in 3 hrs

Molly surveys her classmates and records whether they prefer swimming or tennis, texting or calling, pizza or nachos. Then, she uses the recorded data to construct a two way table showing the communication and food preferences.

A radio station had 60 tickets to a concert. They gave away 2 times as many tickets to listeners as to employees. How many tickets did they give away to employees?

Round 4.908 to the hundredths place.

A radar isn't designed to report the track of an aircraft every second. If this radar reports 30 tracks in one minute, what percentage of the time did the radar track the aircraft

15. 5x - 2y = - 19 8x + 5y = - 55

The morning temperature in Antarctica is - 52 degrees F. how many degrees must the temperature rise to reach o degrees F?

What are the zeros of f (x) x^2-x-20

Find the sets of numbers to which 6/7 belongs. select all that apply A. rational numbers B. real numbers C. whole numbers D. natural numbers E. integers F. irrational numbers

If the variable a is a whole number and the variable d is a decimal less than 1, will d times a be greater or less than a? Why?