Explain how you know that21/30 is greater than 2/3

Jennifer is saving money to buy a bike. The bike costs $236. She has $124 saved, and each week she adds $16 to her savings. How long will it take her to save enough money to buy the bike?

What is the volume of the base of a pyramid is 18 square yards. The height of the pyramid is 5 feet tall if its base is a square 4 feet by 4 feet

What is 75% in simplest form

Length of pregnancies have a mean of 267.6 days and have standard deviation of 15.1 days. A woman tracked her pregnancy and found it to be 309 days. find the Z score for 309. is such length unusual

Which of the following possibilities will form a triangle? A. Side = 16 cm, side = 8 cm, side = 7 cm B. Side = 16 cm, side = 9 cm, side = 7 cm C. Side = 17 cm, side = 12 cm, side = 7 cm D. Side = 17 cm, side = 11 cm, side = 5 cm

Which is greater 64 inches or 5 feet

Wo students, Ann and Max, factored the trinomial 4x2 - 6x - 4. Ann factored it as 2 (x - 2) (2x + 1) and Max factored it as (x - 2) (4x + 2). Indicate which student factored the trinomial completely and which student did not, and explain why.

Find the range of the following data. Scores:90.89,87,79,89,84,80,85,85,79

The distance across the center of a hula-hoop is 2 feet. How much plastic is needed to make the hula-hoop? Keep your answer in terms of pi.

Two numbers add to 336 and the first is 124 bigger than the second. What are the two numbers?