Solve.The equation of a line is y = 
x - 1. What is the slope of a line perpendicular to it?
A. 
B. - 
C. - 
D. 
Answer: B
Mathematics
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Use the appropriate formula to find the indicated figurate number.the 9th triangular number
A. T9 = 36 B. T9 = 40.5 C. T9 = 45 D. T9 = 90
Mathematics
Find the prime factorization of the number. Write any repeated factors using exponents.275
A. 53 ? 11 B. 5 ? 11 C. 5 ? 112 D. 52 ? 11
Mathematics
Factor the perfect square trinomial completely.81y2 - 18xy + x2
A. (x - 9y)2 B. prime C. (x - 9y)(x + 9y) D. (x + 9y)2
Mathematics
Solve.The ratio of the weight of an object on Earth to an object on Planet X is 2 to 11. If a person weighs 210 pounds on Earth, find his weight on Planet X. (Round to the nearest whole number, if necessary.)
A. 4620 pounds B. 38 pounds C. 1155 pounds D. 10 pounds
Mathematics