What are factors of 19,21,23,25

Standard issue passenger license plates in Ohio consist of three letters followed by four numbers. How many standard issue license plates can be produced if there are no restrictions on the letters and numbers?

Assume that X has a normal distribution, and find the indicated probability. The mean is μ = 15.2 and the standard deviation is σ = 0.9. Find the probability that X is greater than 16.1.

Y=-7x+3 solve each equation for x

What is 528--√+63--√528+63 in simplest radical form?

Julie ran 12 1/2 miles in 3 1/2 hours what was her rate in miles per hour

Floyd is an aspiring music artist. He has a record contract that pays him a base rate of / $200$200dollar sign, 200 a month and an additional / $12$12dollar sign, 12 for each album that he sells.

The Burns family went to breakfast at the huddle house. Mr. Burns ordered a meal for $7.75, Mrs. Burns ordered a meal for $ 9.50. the four kids ordered kids meals for $3.49 each. They left a 20% tip. How much was the bill Excluding tax?

Find the upper bonds for the following lengths : a) 40cm measured to the nearest cm B) 82.8cm measured to the nearest tenth of a cm

What is the descriminate of 9x^2+2=10x

Find the area of equilateral triangle of side 4 cm.