What is the sum of prime numbers between 40 and 56

Sumeet uses 0.4 gallons of gasoline each or mowing lawns how much gas does he use in 4.2 hours

Find and state the slope of a line that has given the equation: 2x+5y=10

Find the circumference

In a geometric sequence in which all of the terms are positive, the second term is 3 and the fourth term is 192, what is the value of the 7th term in the sequence?

Find the exact circumferece of a circle with a given radius of 3 1/4 inches. A) 6.25 pi inches B) 6.5 pi inches C) 23.25 pi inches

A certain disease has an incidence rate of 0.2%. If the false negative rate is 8% and the false positive rate is 4%, compute the probability that a person who tests positive actually has the disease.

How many 4-element subsets containing the letter a can be formed from the set {a, b, c, d, e, f, g}?

A safety inspector conducts air quality tests on a randomly selected group of 7 classrooms at an elementary school. Identify the population and sample in this setting.

A square has an area of 15in^2. what is the approximate side lengths of the card

In class, we used associative property to show that when 6 is a factor, then 2 and 3 are factors, because 6=2x3. Use the fact that 10=5x2 to show that 2 and 5 are factors of 70, 80, and 90.