Four Tangent circles are centered on the x-axis. The radius of circle A is twice the radius of circle O. The radius of circle C is four times the radius of circle O. All circles have integer radii and the point (63,16) is on the circle. What is the equation of circle A?

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

In the geometric progression –3, 12, −48… what term is 3,072?

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints