Which of these statements about algebra is true? a. algebra uses abstracts symbols to represent concrete elements in the real world b. in an algebraic equation the same variable can represent two different unknowns c. many great mathematicians were also philosophers. d. an algebraic expression contains an equal sign but an algebraic equation does not. e. the same variable can represent two different unknowns in two different algebraic expressions

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

Si la base de un triángulo isósceles mide 70 m y el ángulo opuesto a ésta mide 58°; entonces ¿cuánto mide la altura de dicho triángulo? a) 21.87 m. b) 40.01 m. c) 43.74 m. d) 63.14 m.

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.