Tìm các chữ số a, b , c biết a/-5=b/-7=c/2 và a-b+c=-28

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

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?

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge