Pe multimea numerelor reale se defineste legea de compozitir asociativa data de x * y = x + y - 2

a) calculati 5 * (-5)

b) aratati ca legea de compozitir * este comutativa

c) calculati (-3) * (-2) * (-1) * 0*1*2*3

A flagpole that was originally 24 feet tall has cracked 9 feet from the ground and has fallen as if hinged. Find out how far from the base of the flagpole the top of the flagpole touched after it had fallen.

Find the inverse of the following function f (x) = cubed root of x+12

In a statistical test, we have a choice of a left-tailed test, a right-tailed test, or a two-tailed test. Is it the null hypothesis or the alternate hypothesis that determines which type of test is used? Explain your answer. A.

The sum of 15 and x plus 7

Round 813,764 to the nearest Ten Thousand. A-820,000 B-814,000 C-810,00 B-813,000

Cheryl and her friends buy a pizza for $15.00 plus a delivery charge of d dollars. If the delivery charge is $2.50 what is the total cost? a. $17.50 c. $12.50 b. $16.00 d. $184

Ashley can ride her bicycle 15 miles in 2 hours. There are 60 minutes in 1 hour, and there are 1,760 yards in 1 mile. How many yards does Ashley travel?

Ellen's new balance on her credit card statement was 332.91. how much is the minimum payment if it must be 15 percent if the balance? 70.32 49.94 52.29

What is 33 divided 58?

Round 951194 to the nearest hundred