As r varies the equation (r -

a.· (r -

b. = 0 defines a sphere. determine the center of this sphere when a = h 3, 5, 3 i, b = h 5, 9, 7 i.

Brooks traded $5250 for Japanese yen, immediately changed his mind, and then promptly traded his Japanese yen back into dollars. Which of these amounts is he most likely to have?

A class of 160 students contains 40 honor students, 60 athletes, and 80 who are neither athletes nor honor students. From the entire group a student is chosen at random.

Solve: 36x = 216 step 1: 6x 2 = 216 step 2: 6x 2 = 63 step 3: x 2 = 3 step 4: x = 1 hilary is solving the problem. if she made a mistake in which step did she make it?

What is the volume of the cube? Solid Figures, Part 1 A. 225 mm3 B. 3375 mm3 C. 1350 mm3 D. 45 mm3 one side of the is 15

A square poster has sides measuring 2 feet less than the sides of a square sign. If the difference between their areas is 16 square feet, find the lengths of the sides of the poster and sign

Doug believes that the function y=6 is linear, while Olga believes that it is not linear. Who is right, and why? A Doug is right, because the function cannot be written in the form y = mx + b.

What is 4.27-1.29?

Which equation is 69 is greater than x

If x = 7, y = 1 and 2 = 1, then evaluate the following expression: X - y + z =

Solve 0.06*0.7+0.03=0.06 * (-0.2) + 0.03