The mean of a normal probability distribution is 500 and the standard deviation is 10. about 95 percent of the observations lie between what two values?

Three friends shared the cost of renting a game system. Each person also rents one game for $8.50. If each person pays $13.25, what is the cost of renting the system?

Find the standard form of the equation of the parabola with a focus at (7, 0) and a directrix at x = - 7.

Mr. walker gave his class the function f (x) = (x+3) (x+5) four students made a claim about the function each student claim is below

Amy has 3 children, and she is expecting another baby soon. Her first three children are girls. What is the probability that the fourth baby is another girl?

Jim knows the length of his garden is 12 feet he knows the area of the garden is 60 feet to the second power what is the width of Jims Garden

What is 2pi / 5radians in degrees

Gabby is recording her results from flipping a coin. She notices that heads has occurred 18 out of 41 times. What is the frequency of tails?

The standard form of the equation of a parabola is x = y2 - 4y + 20. What is the vertex form of the equation? A. x = (y - 4) 2 + 4 B. x = (y - 2) 2 + 16 C. x = (y - 2) 2 + 4 D. x = (y - 4) 2 + 12

Can somebody explain how to convert fractions with different denominators to fractions with the same denominator

There are 6 boys and 8 girls in a singing group. what fractional part of the group is girls