Solve the problem.Find the 13th hexagonal number that corresponds to the following dot sequence.

A. 351
B. 286
C. 98
D. 325


Answer: D

Mathematics

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A student can afford to spend up to $370 on a stereo system and some compact discs. If the stereo costs $155 and the discs are $9.50 each, find the greatest number of discs he can buy. 

A. 22 B. 20 C. 26 D. 25 E. 21

Mathematics

Find the limit.


a. 0
b.
c.
d.
e. does not exist

Mathematics

Provide an appropriate response.What size diameter pipe would be required to carry off the waste from two pipes that have inside diameters of 5" (round to nearest tenth of an inch)?

Fill in the blank(s) with the appropriate word(s).

Mathematics

Answer the following statement(s) true (T) or false (F)

1. The area of a 45°–45° triangle with leg length 2 inches is the same as the area of a square with leg length ?2 inches. 2. Surface area may be expressed in centimeters. 3. The surface area of a rectangular prism is the sum of the areas of the six rectangles which form its faces. 4. The volume of any pyramid is the product of one-half the area of the base and its height.

Mathematics