What is the standard form of the equation of the circle in the graph?

a. (x - 1)2 + (y - 2)2 = 4
b. (x + 1)2 + (y + 2)2 = 4
c. (x + 1)2 + (y + 2)2 = 16
d. (x - 1)2 + (y - 2)2 = 16

Acar traveling at 65 mph leaves 25 foot skid mark what is the ratio of the speed to length of skid mark (feet) in the simplest form

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 the pair of fractions as a pair of fractions with a common denominator