In a concert, 18 people sang and 14 played piano. Six people played both. How many people played at the concert.

Which of the following phrases does not describe the number - ¾? a. rational number b. irrational number c. real number d. negative number

Tan (-100) is equivalent to

What is the value of 50 - 3 (x² - Y?) + x when x = 6, and y = - 4?

Keisha has a collection of dimes and nickels worth a total of $4. If she has 50 coins in all, how many nickels does Keisha have?

Factor by using the perfect-square trinomial 64x2 - 144x + 81

On Monday, Xavier went to recess at 1:30 p. m. . Recess lasted for 20 minutes. • Xavier had math class after recess. It lasted for 55 minutes • Xavier walked home after math class. He took 25 minutes to walk home from school.

Write 2 multiplication problems

The local historical Society wants to preserve two buildings. The total age of the buildings is 292 years.

The sides of a square are 3 2/7 inches long. What is the area of the square?

In a scale drawing of an apartment 1 centimet represents 2 3/4 feet. If the length of the kitchen is 4 1/2cm on the scale drawing, what is the actual length in feet, of the kitchen?