Which one of the following statements expresses a true proportion?

A. 3:4 = 9:12 B. 54:9 = 6:3 C. 2:1 = 1:2 D. 7:9 = 8:9

What is the axis of symmetry for the parabola with the equation y=2x^2

10x^3-22x^2-34x-8/5x+4 divide

A road sign gives drivers information about traffic on busy highways. One sign shows "15 miles in 20 minutes." What is the speed in miles per hour?

2 (2a-1) + 3 - a if a = - 5

At Elmwood Middle School there are 4 teachers for every 68 students. There are 425 students enrolled at the school. How many teachers are needed?

After tossing the same coin 10 times, you are surprised to find that tails has come up 8 times. You therefore conclude that this coin is not fair and that the probability of getting tails with this coin is 0.80.

One polygon has a side of length 2 feet. A similar polygon has a corresponding side of length 4 feet. The ratio of the perimeter of the smaller polygon to the larger is 2/1 or 1/2 or 1/4

Maxine spent 15 hours doing homework last week. this week she spent 18 hours doing homework. she says she spent 120% more time doing homework this week. is she correct? show your work to justify your decision.

Answer key to why did the snake stick his head in the rabbits mouth worksheet

What is the ration of 4/20 and 1/5