Solve the problem.Going into the final exam, which will count as two tests, Emily has test scores of 76, 83, 73, 64, and 92. What score does Emily need on the final in order to have an average score of 80?
A. 86
B. 92
C. 46
D. 66
Answer: A
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Factor completely.5x2 + 35x
A. x(5x + 35) B. 5x(x + 35) C. 5x2(x + 7) D. 5x(x + 7)
Solve the problem.Let (a, b) and (c, d) be two points in the first quadrant, and let ? be the angle between the line segment connecting (a, b) with the origin and the line segment connecting (c, d) with the origin. It can be shown thatcos ? = 
.Find ? if 
and 
style="vertical-align: -4.0px;" /> Give your answer in degrees rounded to the nearest hundredth. A. 111.50° B. 55.68° C. 40.43° D. 78.62°
If a number is nine less than twice its opposite, what are the possible numbers? ?
A. The number is - 5. B. Any number less than 3. C. Any number less than - 3. D. The number is - 3. E. The number is 4.
Solve the equation to find the value of n.5 × n = 13
A. 13 B. 5 C. 2.6 D. 65