Are the following polynomials?:

-x^2+5x

6x^2+5x

-7x^2+5/3x

Which statement and reason best complete this proof? A. B. C. D.

Of all the permutations of the letters in the word DOG, if you choose one at random, what is the probability that it is an actual English word?

Which expression is equivalent to 6^4times6^3? (6-6-6-6) + (6-6-6) (6+6+6+6) (6+6+6) (6.6.6.6) (6.6.6) (6.6.6.0.6) (6:6-6-6)

Is it possible to divide 15 by a mixed number and get a quotient greater than 15?

The number - 4 does not belong to which set of numbers? a. rational numbers b. whole numbers c. real numbers d. integers

What is the solution 3^x - 8 = 7

A jar contains 6 red jelly beans, 6 green jelly beans, and 6 blue jelly beans. If we choose a jelly bean, then another jelly bean without putting the first one back in the jar, what is the probability that the first jelly bean will be green and the

A tutor schedules either 30-minute sessions or 60-minute sessions with her students. Last week, the tutor gave 8 sessions which lasted for a total of 7 hours. How many 60-minute sessions did the tutor give last week?

A school playground is in the shape of a rectangle 400 feet long and 200 feet wide if fencing cost $12 per year, what will it cost to place fencing around the playground

Failures of a testing instrument from contamination particles on the product follow a Poisson process with a mean of 0.38 failures per an 8-hour shift. a) Find the probability that the instrument does not fail during a shift.