Expand by minors along the first column.
A. x + 8y + 5
B. x + 8y - 5
C. -x + 8y + 5
D. x - 8y + 5
Answer: A
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State how many peaks you would expect for the distribution described.Sales of birthday cards over a one-year period
A. One B. None C. Three D. Two
Solve the problem.A ship sailing parallel to shore sights a lighthouse at an angle of 13° from its direction of travel. After traveling 4 miles farther, the angle is 24°. At that time, how far is the ship from the lighthouse?
A. 2.21 mi B. 4 mi C. 8.53 mi D. 4.72 mi
Solve the right triangle shown in the figure. Round lengths to one decimal place and express angles to the nearest tenth of a degree. 
A = 51.4°, c = 51.2
A. B = 51.4°, a = 40, b = 31.9 B. B = 38.6°, a = 40, b = 31.9 C. B = 38.6°, a = 31.9, b = 40 D. B = 51.4°, a = 31.9, b = 40
Write the equation of the line with the given slope and y-intercept.m = - 
, b = 
A. y = - 
x - 
B. y = 
x - 
C. y = - 
x + 
D. y = 
x + 