What is the common difference of the sequence?
-4,-2, 0, 2, 4,.
d = - 2
d= 2
d = 2
d = 4
d = -4

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)

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.