Find the midpoint between each pair of points (-1,-5) and (-5,9)

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr^2. write your answer in scientific notation.

7. carlos martin received a statement from his bank showing a balance of $56.75 as of march 15. his checkbook shows a balance of $87.37 as of march 20. the bank returned all the cancelled checks but two. one check was for $5.00 and the other was for $13.25. how much did carlos deposit in his account between march 15 and march 20?

Abag contains red and blue marbles, such that the probability of drawing a blue marble is 3/8. an experiment consists of drawing a marble, replacing it, and drawing another marble. the two draws are independent. a random variable assigns the number of blue marbles to each outcome. calculate the expected value of the random variable. a. 3/4 b. 1/3 c. 3/8 d. 2/3