Find two square roots for the complex number. Write your answer in standard form.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: E
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a and b represent the two legs of a right triangle, while c represents the hypotenuse. Find the length of the unknown side.
A. c = 26 B. c = 50 C. c = 49 D. c = 35
Solve the problem.The efficiency e (in percent) of an automobile engine is given by 
where s is the speed 
of the car. Find the average efficiency with respect to the speed for 
to 
A. 32.8% B. 34.5% C. 29.8% D. 64.4%
Solve the problem.A ceramics workshop makes wreaths, trees, and sleighs for sale at Christmas. A wreath takes 3 hours to prepare, 2 hours to paint, and 9 hours to fire. A tree takes 14 hours to prepare, 3 hours to paint, and 4 hours to fire. A sleigh takes 4 hours to prepare, 14 hours to paint, and 7 hours to fire. If the workshop has 86 hours for preparation time, 66 hours for painting, and 91 hours for firing, how many of each can be made?
A. 7 wreaths, 5 trees, 4 sleighs B. 3 wreaths, 6 trees, 4 sleighs C. 4 wreaths, 3 trees, 6 sleighs D. 6 wreaths, 4 trees, 3 sleighs
Solve the problem.Dombro Construction Company needs to cut an arch for the top of a doorway. The arch needs to be 10 feet wide and 2 feet high. The arch will be a section of a circle, drawn using a stretched string with a pencil attached at the end as a compass. Using the coordinate system as shown in the drawing, find the y-coordinate of the point on the y-axis that would be the center of the circle. Round to the hundredths place.
?a = 5
A. 5.83 B. 52.5 C. 4.57 D. -5.25