Name the property that justifies the statement. All variables represent real numbers.11 + (-12) = (-12) + 11
A. Distributive property of multiplication over addition
B. Commutative property of addition
C. Inverse property of addition
D. Associative property of addition
Answer: B
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Solve the problem.The height h in feet of a frisbee thrown is given by 
, where x is the time traveled in seconds. The frisbee is released at a height of 
At what time will the height of the frisbee be 
again? (Round your answer to the nearest tenth of a second, if necessary.)
A. 5.1 sec B. 10.1 sec C. 12.5 sec D. The height of the frisbee will never be 3 feet again.
A diagnostic test for a certain disease has a sensitivity of 0.86 and a specificity of 0.92. The probability that a patient has the disease is estimated as 0.3. The diagnostic test is given and returns negative. What is the posterior probability that the patient does not have the disease?
What will be an ideal response?
Find an equation of the the line satisfying the given conditions.Through (4, 9); perpendicular to 6x + 8y = 96
A. 4x - 3y = -11 B. 4x - 3y = 1 C. 3x - 4y = -11 D. 4x + 3y = -11
Solve. Express the answer in scientific notation to two decimals unless requested otherwise.The national debt of a small country is $7,280,000,000 and the population is 2,660,000. What is the amount of debt per person?
A. $2.74 × 103 B. $27.40 C. $2.74 D. $2.74 × 106