Heidi swims 2/3 of a kilometer in 2/3 of an hour. What is Heidi's speed in kilometers per hour? Show your work or explain how you know.

Solve for x: 4x + 12 = 8 (given) 4x = - 4 (subtraction) x = - 1 Solve for x: 4x + 12 = 8 (given) 4x = - 4 (subtraction) x = - 1 What is the reason for the last step in the argument? A) division B) addition C) subtraction D) symmetric property

What are the intercepts of - 3x+5y-2z=60? A (-60,0,0), (0,60,0), (0,0,-60) B (-180,0,0), (0,300,0), (0,0,-120) C (-3,0,0), (0,5,0), (0,0,-2) D (-20,0,0), (0,12,0), (0,0,-30)

Simplify √250x^16 / √2x

In a bag of marbles 12% were red and 14% were blue, and the rst were white. If there were 250 marbles, how many were red and blue?

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. Find the sum of a finite geometric series. Amanda teaches the art of quilling to 4 students.

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