The sum of the first n terms of an arithmetic sequence a1, a2, a3, ..., an is 1/2n (a1+an), where a1 and an area the first and nth terms of the sequence, respectively. What is the sum of the odd integers from 1 to 99 inclusive?

8.72 inches to feet

A Box is 16 inches tall, 10 inches wide and 10 inches long how many small boxes can fit inside

Find the width of a rectangle if the length is 4 times the width. The perimeter of the rectangle is 50. Define the variable: Write a simplified equation:

It takes 15 electricians 24 days to wire a new housing subdivision. How many days would 18 electricians take to do the same job, assuming all electricians work at the same pace?

In ΔWXY, the measure of ∠Y=90°, XW = 25, YX = 24, and WY = 7. What is the value of the cosine of ∠W to the nearest hundredth?

Write a set of three numbers that have a GCF of 16. What procedure did you use to find your answer?

A rectangular dance floor has a width of 12 meters and a length of 16 meters. What is the length of a diagonal of the dance floor?

Air containing 0.04% carbon dioxide is pumped into a room whose volume is 6000 ft3. The air is pumped in at a rate of 2000 ft3/min, and the circulated air is then pumped out at the same rate. If there is an initial concentration of 0.

Find the 110th term of the sequence - 7,3,13,23

Which number sentences show how to solve the problem? The bowling club donated 4 crates of orange juice for the neighborhood picnic. The soccer club donated 12 crates of mixed juices for the picnic. Each crate holds 32 juice boxes.