Which equations show that the set of whole numbers is closed under addition?

Choose all answers that are correct.

A.

0 + (-1) = - 1

B.

1 + 1 = 2

C.

2 + 0 = 2

D.

2 + (-1) = 1

Simplify (5x^2 - 3x+3) - (x^2+2x-1).

Y = f (x) = 16 Find f (x) when x = 5 Enter the correct answer. DONE

What is the simplest form of 12/60

The digits from the serial number of a dollar bill are listed below. 6,8,5,8,2,8,5,8 What digit in the serial number of this dollar bill occurs most often?

How many inches are in feet

Solve for x. 3 (3x - 1) + 2 (3 - x) = 0 x = x = - x = x = -

3 (4x - 2) = 10 + 10x

Read and follow the directions below. 1. Imagine a deck of 52 cards, ranging from twos through the face cards to aces, all in four equal suits-hearts, diamonds. clubs. and spades. 2. Remove all of the red suit cards. 3. Add back only the hearts. 4.

A train travels a total of 67km at a constant speed of 110km/h. How long is its journey? Give the answer in minutes and seconds to the nearest second.

Ann took a taxi home from the airport. the taxi fare was 2.10$ per mile, she gave the driver a 5$ tip, Ann paid a total of 49.10$. write an equations to show how many miles (m) she rode i n the taxi