Solve the problem.A wooden block sitting at rest on a flat, level board will just begin to slide when the board is tilted up to a critical angle of inclination, ?s. An experiment that determines this critical angle can be used to find the coefficient of static friction, 
for the block on the board by using the relation 
Graph this relation over 
and determine ?s for an experiment that yields a ?s for 9°.
A. 0.16;
?s
B. 0.11;
?s
C. 0.16;
?s
D. 0.99;
?s
Answer: A
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Solve the problem.An honest coin is tossed ten times. The probability that the number of heads is double the number of tails is
A. 0.
B. 
.
C. 
.
D. 
.
E. none of these
Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0,360°].
A. 24; 135°
B. 24
; 45°
C. 48; 315°
D. 24; 315°
Solve.At Allied Electronics, production has begun on the X-15 Computer Chip. The total revenue function is given by 
and the total cost function is given by 
where x represents the number of boxes of computer chips produced. The total profit function, 
is such that 
Find 
alt="" style="vertical-align: -4.0px;" /> A. P(x) = -0.3x2 + 37x + 9 B. P(x) = 0.3x2 + 37x - 27 C. P(x) = 0.3x2 + 42x - 18 D. P(x) = -0.3x2 + 42x - 9
Determine whether a linear model, a quadratic model, or neither type of model would be reasonable for modeling the data depicted by the scattergram.
A. Linear B. Quadratic C. Neither