In a year, a study found that of the 6 billion people in the world, 4 billion have cell phones. How many people lived without access to cell phones that year?

Solve each system of equations by substitution Y=50x+4. Y-32x=40

Rewrite each of the following durations using eighth notes. Write in words and as a fraction: a. 1 quarter note b. 1 half note c. 1 full note

Edwin says that when (x + 2) 2 = 49, that x + 2 = 7.

The two-way table displays the hair color of the sophomore (So), junior (Jr), and senior (Sr) classes at West Coast High School, represented by percents in the table. A 5-column table has 3 rows. The first column has entries Blonde, brown, total.

Is there a rational number between 1/7 and 1/8

Convert. 0123 to a percent

Joe's house is 5.5 km from the creek, the distance between Jane's house and the creek is twice as far as Joe's house how much further is Jane's house from the creek than Joe's house in meters metric

John had 84 dollars, and his brother Fred owed 12 dollars to his friend. John gave his brother some money. Fred paid his debt and now both of them has the same amount left. How much money did John give Fred?

True or false: dilations map angles of the same degrees

The rental fee for a bike is $4 plus $1.50 per hour. Write an equation in slope-intercept from that models this situation.