Find the least common denominator for these

two rational expressions.

x/x^2+2x+1 - 5/x^2+6x+5

Find the percent increase from 8 to 18

18x+30=12x-6 what is the value of x

A metalworker has a metal alloy that is 25 % copper and another alloy that is 55 % copper. How many kilograms of each alloy should the metalworker combine to create 100 kg of a 43 % copper alloy?

What is the word problen for 4*8?

The yummy ice cream company wants to package ice cream in cylindrical containers that have a volume of 5453 cubic centimeters. The marketing department decides the diameter of the base of the containers should be 20 centimeters.

The table below shows the relationship between the number of hours Nina worked and the number of hours Kathy worked.

Determine all of the roots (or zeros) 4x^3-4x^2-11x+6=0 if 2 is known to be one of the roots

In a small town there are two main sections called the Hill section and the Lake section. The town has a population of 4298. The number of people who live in the Hill section is 188 more than twice the number of people who live in the Lake section.

Two accounts each begin with a deposit of $5000. Both accounts have rates of 5.7 %, but one account compounds interest once a year while the other account compounds interest continuously.

Blue whales eat an average of 5,000 pounds of fish daily, with a standard deviation of 850 pounds. Approximately what percentage of blue whales eat more than 7,550 pounds of fish? 15.87% 5% 0.3% 0.15%