Am trying to find the value of r

1/r + 2/1-r = 4/r^2

Janine spends spends 1/10 hour making the bed, 1/5 hour setting dressed, and 1/2 hour eating breakfast. What fraction of an hour does she spend doing these activities

In the number 567.8 write a new number where the 7 decreases by 1/10

which of the following are true statements? Check all that apply logM^ (p) = p*logM log ((M) / ((N))) = logM-logN log ((M) / ((N))) = (logM) / (logN) (logM) ^ (p) = p*logM

A pentagon with each side measuring 6 inches, a hexagon has 5 inches, which shape has a greater perimeter and explain why?

Is the equation no solution, all solution, or one solution? 2 (x+1) + 3x = 2x+1

How do you Find percent markup

Write an algebraic expression that represents the quotient of a number and 20

Approximate the value of 12-2pie

Jeff is buying apples and bananas from the farmer's market. He know that to find his total cost he will use the expression 1.25a + 0.50b, where a stands for the number of apples he bought and b stands for the number of bananas he bought.

A theater charges $5 for student tickets and $7 for adults tickets. They sold 75 tickets for a total of $425. Which set of equations can be used to determine x, the number of students tickets sold, and y, the number of adult tickets sold?