If a final examination in a course is weighted 3 times as much as a quiz and a student has a final examination grade of 85 and quiz grades of 70 and 90, what is the mean grade.

What is the value of x in this equation 3 (2x-5) - 4x=-11

What is 4/9 times 2/3

Which expressions are equivalent to this expression? 3 (n+4) Select each correct answer. 2n+12+n 12+n+n+n 3n-12 3n-12

8. In 1986, an accident at the Chernobyl nuclear power reactor led to widespread contamination of Cesium-137, a highly radioactive, man-made isotope of Cesium. It has a half-life of 30.17 years, which means it decays at a rate of 2.3% per year.

A group of three friends went to lunch. The bill, before sales tax and tip, was $45.50. A sales tax of 9%was added. The group then 20% on the amount after the sales tax was added.

Which expression can be used to find the volume in cubic

During the last 15 years of his baseball career, Andrew hit the following number of home runs each season.

What are the common factors of 14,45 and 90 90?

4 over x+4 - 2 over x+1

The sides of a square garden are 8 feet long. You enlarge the garden to create a 25% increase in the length of each side. Find the nw length of the sides.