Math Answers

Draw the cumulative frequency polygon and then use your graph to determine the median.

A connecting of rod 24 inches in length is attached at Q to a drive wheel whose radius is 6 in. when OP, the distance from P to the center of the wheel, is 26 inches, find the angle QOP.

A mountain is seen in a direction 30° north of east and is known to be 5 miles away from another mountain as seen in a direction 40° north of east 8 mile distance. how far apart are the two?

A firm buys 3 shipments of parts each month .The purchasing agent selects at random from among four in state suppliers .What is the probability that the orders are placed with
a. in-state suppliers only.
b. out of state suppliers only.
c. at least in state suppliers only.

A telephone company representative estimates that 40% of its customers have
call-waiting service. To test this hypothesis, she selected a sample of 100
customers and found that 37% had call waiting. At
  0.01
, is there enough
evidence to reject the claim?

1. The geometric series has a first term of 8 and the limiting sum of 12, find the common ratio.


2. If the limiting sum of a geometric series, 3/4 is 16 find the first term.


3. If 1+ x +x^2 +..... has a limiting sum of 5, find x.

Solve the inequality. Graph the solution on a number line.


Part 1 out of 2
0 >
m
8

Show that the function z = Iog (x2 + y2) satisfies the equation d2z/dx2+ d2z/d y2 = 0

By graphing the boundaries of a 2d figure on a graph using these inequalities{3x-2y>-12,y<3,y>-3, and x<0, what is the volume and surface area of the 3d shape produced by revolving this 2d shape around the y axis?

An ant lives on the surface of a cube with edges of length 7cm. It is currently
located on an edge x
cm from one of its ends. While traveling on the surface of the cube,
it has to reach the grain located on the opposite edge (also a
t a distance xcm from one of its ends)
.
(i) What is the length of the shortest route to the grain if x = 2cm? How many routes of
this length are there?
(ii) Find an x for which there are four distinct shortest length routes to the grain.