Use the square root property to solve the equation.4x2 - 44 = 0
A. {-11, 11}
B. {-
, 
}
C. {22}
D. {12}
Answer: B
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Provide an appropriate response. Elvira purchases 18 Halloween masks for a party. If her total bill was $107.10, estimate the average cost of each mask by rounding to one nonzero digit. Find the exact cost.
A. $2,000; $1,927.80 B. $5.50; $5.95 C. $5; $5.95 D. $10; $5.95
Solve the inequality and give the solution set in set builder notation.
? 0
A. {x|x ? - 
}
B. {x|- 
? x ? 4}
C. {x|- 
? x < 4}
D. {x|x ? - 
or x > 4}
Solve the application using the percent equation. Answer with a complete sentence.A company's profit amounted to 5% of its sales. If the profits were $2 million, then what were the company's sales?
A. The company's sales were $42 million. B. The company's sales were $40 million. C. The company's sales were $41 million. D. The company's sales were $38 million.
Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = -4i - 4j + 4k, v = 8i + 8j - 8k
A. 0; 4i+ 4j - 4k
B. 12; 
(4i + 4j - 4k)
C. 4
; 
(4i + 4j - 4k)
D. 0; no direction