Solve the system using the matrix inverse method.-4x - y - 7z = -57-3x + 9y - 8z = -44-2x - 3y + z = -13
A. {(-7, 1, 14)}
B. ?
C. {(7, 1, 4)}
D. {(7, 4, 1)}
Answer: C
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Find an antiderivative of the given function.f(x) = 7(9x + 1)6(9)
A. (9x + 1)7
B. 
C. 
D. 
Let (m × n) denote a matrix of size m × n. Find the size of the following product, or state that the product is not defined.(2 × 1)(1 × 2)
A. 2 × 2 B. not defined C. 1 × 1 D. 1 × 2
Write the number without exponents.7.960 × 107
A. 7,960,000 B. 79,600,000 C. 557.2 D. 796,000,000
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