The probability that a baseball player reaches first base after a hit is 3 times out of 10 (30%). Out of his next 50 hits, about how many times can he expect to reach first base?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Find the quotient. 50a2 – 98b2 -5a +7b

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?