Mary has twice as many pencils as she has pens. Tom borrows a pen. Now, Mary has ten less pens than pencils. How many pencils does Mary does?

Suppose ou are making a scale drawing. Find the length of each object on the scale drawing with the given scale. Then find the scale factor. A: A parking lot 480 meters wide: 1 centimeter = 16.5 meters B. a desk 6 feet long: 1.5 inches = 0.5 feet.

Suppose a binomial trial has a probability of success of 0.4, and 75 trials are performed. What is the standard deviation of the possible outcomes? Round your answer to two decimal places.

Find the amount in an account if $7,650 is invested at 9.15% compounded quarterly, for 8 years and 6 months

8 divided by 2 (2 x 2)

Can somebidy give me examples of domain and range?

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