The equations of four lines are given. identify which ones are perpendicular. line 1: y=2

line 2: y=1/5x-3

line 3: x=4

line 4: y+1=-5(x+2)

What are the relative frequencies to the nearest hundredth of the columns of the two-way table? a b group 1 102 34 group 2 18 14

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

What is the sum of these mixed numbers 4 2/3+ 3 1/9