Rationalize the denominator. If any variables are present, assume that they represent nonnegative numbers, and assume that the denominator is not zero.
A. 
(
+ 1)
B. 
(
+ 1)
C. 
(
+ 1)
D. 
(
- 1)
Answer: C
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?Which of the following is not true about perpendicular lines? ?
A. ?The product of their slopes is equal to -1. B. ?Ifm1 andm2 are slopes of two different lines, and the lines are perpendicular to each other, then m2 is the reciprocal of m1. C. ?Slopes of perpendicular lines are reciprocals of each other. D. ?Perpendicular lines intersect at right angles. E. ?Perpendicular lines break a region into four equal parts.
Add or subtract as indicated.(2 + 5x7 + 9x9 + 4x8) + (2x8 + 3x7 + 6 + 9x9)
A. 4x9 + 4x8 + 15x7 + 13 B. 18x9 + 6x8 + 8x7 + 8 C. 18x18 + 6x16 + 8x14 + 8 D. 32x48 + 8
Decide whether the statement is true or false. If the statement is false, give an example to show that it is false.An Euler circuit for a graph uses each edge in the graph.
Fill in the blank(s) with the appropriate word(s).
Determine if the argument is valid or invalid. Give a reason to justify answer.If you eat well, you will be well.If you are well, you will be happy.? If you eat well, you will be happy.
A. Valid by the law of contraposition B. Invalid by fallacy of the converse C. Valid by the law of syllogism D. Invalid by fallacy of the inverse