The distance needed to stop a
car varies directly as the square
of its speed. it requires 120 m to
stop a car at 70 km/h. what
distance is required to stop a
car at 80 km/h?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Write an algebraic expression for the word expression the quotient of c and 8

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315