Sketch the graph of the equation. Identify the vertex and the intercepts.y = -x2 + 2x + 8
A. vertex: (1, 9);
x-intercepts: (-4, 0) and (2, 0);
y-intercept: (0, 8)
B. vertex: (1, 9);
x-intercepts: (-2, 0) and (4, 0);
y-intercept: (0, 8)
C. vertex: (- 1, 9);
x-intercepts: (-4, 0) and (2, 0);
y-intercept: (0, 8)
D. vertex: (1, - 9);
x-intercepts: (-2, 0) and (4, 0);
y-intercept: (0, 8)
Answer: B
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Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.AB = 321 ydAC = 188 ydBC = 161 yd
A. A = 21.3°, B = 25.1°, C = 133.6° B. No triangle satisfies the given conditions. C. A = 25.1°, B = 21.3°, C = 133.6° D. A = 21.3°, B = 12.6°, C = 146.1°
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856
Apply the Power Rule and simplify the expression. Write the result with positive exponents only.(a-6)4
A. a2
B. 
C. 
D. a24
Solve the equation.
x - 
= -3
A. {11} B. {-13} C. {-11} D. {13}