Solve the following system by any appropriate method. If there is no real number solution, so state.xy = 110x - y = 3
A. (
, 2), (- 
, -5)
B. (-2, 2), (5, -5)
C. (2, 
), (-5, - 
)
D. no real solution
Answer: A
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Find the distance between the pair of points. Give an exact answer.(-4, -5) and (1, 5)
A. 5 units
B. 75 units
C. 75
units
D. 5
units
A cardiac monitor is used to measure the heart rate of a patient after surgery. It compiles the number of heartbeats after t minutes. When the data in the table are graphed, the slope of the tangent line represents the heart rate in beats per minute. The monitor estimates this value by calculating the slope of a secant line. Use the data to estimate the patient's heart rate after 42 minutes using the secant line between the points with t= 38 and t = 42.
a. 74
b. 80
c. 85
d. 70
e. 76
f. 75
Use your calculator to evaluate the expression rounded to three decimal places. e5
A. 148.413 B. 0.007 C. 1.609 D. 0.699
Find the product of the given complex number and its conjugate. Write the answer in the form a + bi.
- 4i
A. 11 + 16i B. 27 C. 15 D. 11 - 16i