Simplify the expression.
?
?
A. 50
B. -50
C. 48
D. -48
Answer: A
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.3x - 5y - 8z = -6 and- 2x + 4y - 9z = 6
A. 0.481 rad B. 0.949 rad C. 1.471 rad D. 1.090 rad
The number per day C of customers patronizing a restaurant ?t days after the grand opening is given by
.
?
There are two times when 600 customers per day patronize the restaurant. Find both times. Round your answers to the nearest whole number of days.
A. There are never 600 customers per day.
B. 
and 
C. 
and 
D. 
and 
Solve the problem.Suppose a ball is thrown upward to a height of h0 meters. Each time the ball bounces, it rebounds to a fraction r of its previous height. Let hn be the height after the nth bounce. Consider the given values of h0 and r. (a) Find the first four terms of the sequence of heights {hn}. (b) Find an explicit formula for the nth term of the sequence {hn}. h0 = 6, r = 0.5
A. (a) 6, 3, 
, 
(b) hn = 
(6)n
B. (a) 6, 3, 
, 
(b) hn = 6
n
C. (a) 6, 12, 24, 48
(b) hn = 6(2)n
D. (a) 6, 3, 
, 
(b) hn = 
n
Solve the problem.Last week, Samantha ran 21 miles. This week, she ran 19
miles. How much more did she run last week?
A. 40
miles
B. 1
miles
C. 1
miles
D. 24 miles