Find the value of 7a+2b * 19. What is the
Let 3a + 4b = 18 and 5a + 3b
value of 7a + 25 ?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.7 days. what is the probability of spending more than 2 days in recovery? (round your answer to four decimal places.)