House blend coffee is 50% Colombian beans and special blend coffee is 80% Colombian beans. How much of each should be used to produce 100kg of a blend that's is 68% Columbia beans?

Simplify 3 to negative 4power

The population of Smallville increased by 20% from 2000 to 2005 and it increased by 30% from 2005 to 2010. By what percent did the population of Smallville increase from 2000 to 2010?

Solve the quadratic equation by taking square roots. 3x2 - 4 = 28

The goals against average (A) for a professional hockey goalie is determined using the formula A=60 (g/2). In the formula, g represents the number of goals scored against the goalie and t represents the time played, in minutes.

If a test has 126 questions and you got 34% how many questions did you get right

82 = 2 (1-8p) step by step

Find the simple interest of $2300 invested at 7.5%for 10years

Kelly shows all the ways to make 49 as tens and ones. What ways does she show

I have done a math equation for school and i forgot if i could leave a inproper fraction as my answer or if its a fraction i can reduce should i or should i not

Is 1,2,3,6,9 and 36 a múltiple of 9?