Solve the system using the inverse that is given for the coefficient matrix.
?
A. {(48, 10, 1)}
B. {(-33, 39, -11)}
C. {(-17, 75, 1)}
D. {(-7, -11, -9)}
Answer: B
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Evaluate the integral by making a substitution (possibly trigonometric) and then applying a reduction formula.
A. 4[
- ln(
+ 1)]
B. 2[
+ ln(
+ 1)]
C. 
+ ln(
+ 1)
D. 4[
+ ln(
+ 1)]
Solve for x using an equivalent exponential expression.A square sheet of posterboard has an area of 256 square centimeters. What is the length of each side?
A. 128 cm B. 16 cm C. 32 cm D. 8 cm
Find the indicated probability. Round as indicated.In a certain college, 20% of the physics majors belong to ethnic minorities. If 10 students are selected at random from the physics majors, what is the probability that exactly 2 belong to an ethnic minority? Estimate the probability to five decimal places if necessary.
A. 0.00007 B. 0.30199 C. 1.8 D. 0.00671
For the graph of the function y = f(x), find the absolute maximum and the absolute minimum, if it exists.
A. Absolute maximum: none; Absolute minimum: f(1) = 2 B. Absolute maximum: none; Absolute minimum: none C. Absolute maximum: f(-1) = 6; Absolute minimum: f(1) = 2 D. Absolute maximum: f(3) = 5; Absolute minimum: f(1) = 2