What is the approximate length of the midsegment parallel to bc. a) 4.5 b) 4.9 c) 5.6 d) 6.2 coordinates are b(-6,1) c(5,-1)   there is another point a(3,7) just in case u need it 

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

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?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.