The soccer balls manufactured at a factory have pressures that are Normally distributed, with a mean pressure of 8.7 PSI and a standard deviation of 0.2 PSI. What percentage of soccer balls from the factory have a pressure between 8.1 and 8.7 PSI? 0.3% 49.85% 50% 99.7%

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Which of the following represents the length of a diagonal of this trapezoid?

Charlie tosses five coins.what is the probability that all five coins will land tails up.