Marco can build a computer twice as fast as Cliff. Working together, it takes them 5 hours. How long would it have taken Marco working alone?

What is 8.4 as a fraction

What is 7 as a percent

A box contains 6 red pens and 4 blue pens. Cory randomly picks a pen from the box and keeps it. Then Todd randomly picks a pen from the box. What is the probability both boys will pick red pens? A. 1/3 B. 9/25 C. 1/30 D. 1/36

James drives to the store and back in 1/2 an hour the distance to the store is 10 miles what was his average vrkocity for the trip 20 mph 0 mph 5 mph 3 mph

The area of a pizza is 616 square centimeters. what is the radius? remember a = (pi) r^2 use pi = 22/7

Natalie has a choice of three breads, five choices of meats, and four choices of cheese to make a sandwich. how many different sandwiches can she make?

What is the area of this triangle 12 inches and 3 inches

Write as an expression and simplify: the tripled product of 6a and b^2

What does n equals when 10 = - 8+n divided by 4

What is 1.5 times 2/3 equal?