What is the magnitude of the vector product? 4.00i + 7.00j?

Marco states that 7.696696669…… is a rational number because it is a repeating decimal. is he correct? justify your answer.

Solve the equation for x. 50(4x + 12) = 200

Charlene's parents deposit $500 in an account on the day she is born. the account earns a high interest rate of 9.2% compounded quarterly because charlene is not allowed to access the money until her 22nd birthday. how much money will charlene have on her 22nd birthday? a: $3,698.50 b: $5,921.31 c: $101,200 d: $ 824.58