Am trying to find the value of r

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

brenda deposits $500 in a saving account that pays a simple interest rate of 2.5% per year. How much interest will Brenda earn after 18 months?

X+y=20 3x-3y=30 Which values of x and y satisfy this system of equations?

What is 348,000,000,000,000 estimated as the product of a single digit and a power of 10? A. 3*10^13 B. 4*10^13 C. 3*10^14 D. 4*10^14

If A ⊂ B, then A ∩ B = A ∪ B. always, sometimes, never

Name the coefficients in the expression: 4x + 9 - 1y

Write a linear factorization of the function. f (x) = x4 + 49x2 options: f (x) = x2 (7x + i) 2 f (x) = x2 (x + 7i) (x - 7i) f (x) = x2 (7x + i) (7x - i) f (x) = x2 (x + 7i) 2

Which is an example of dealer incentives? A. Sun car dealers pay $18,000 to Galaxy car manufacturers for a car worth $20,000. B. Sun car dealers pay $21,000 to Galaxy car manufacturers for a car worth $20,000. C.

What is five divided by seven answer this question immediately

Henri bought a swim suit at a cost of $8. Which statements are true regarding the cost of the suit? If the selling price is marked up by 25 percent, the new price will be If the selling price is marked up by 40 percent, the new price will be If the

Apply the distributive property and the greatest common factor to write an equivalent expression 32k+24