In the figure below, , ,

class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_93ea9cf9eb344d2c92d2b503f" />, and . Find x.

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?



A. 25

B. 20

C. 19

D. 24

E. 18

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Answer: C

Mathematics

Write a system of inequalities that describes the possible solutions to the problem.Andy decides to fence off a rectangular piece of his land to use as a vegetable garden. He has 80 feet of fencing so the perimeter of the fenced in area cannot exceed 80 feet. The length of the garden is to be at least 4 feet longer than the width. The width must be at least 6 feet. Write a system of inequalities that describe this situation. Let w represent the width and l represent the length.

A. l + w ? 80  l ? w + 4  w ? 6 B. 2l + 2w ? 80  l ? w + 4  w ? 6 C. l + w ? 80  w ? l + 4  l ? 6 D. 2l + 2w ? 80  w ? l + 4  l ? 6

Find  by solving the initial value problem.

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What will be an ideal response?

Use the transitive law to complete the following:

If 2 = w and w = x, then ___________. (a) w = 2 (b) x = w (c) 2 = x (d) 2 = 2

Find the domain of the function.f(x) = 

A. {x|x ? -1}, or (-?, -1) ? (-1, ?) B. {x|x > 0}, or (0, ?) C. {x|x ? 1}, or (-?, 1) ? (1, ?) D. {x|x < 0}, or (-?, 0)