Use the addition rule to solve the problem.If P(A) = 0.4, P(B) = 0.4, and P(A ? B) = 0.2, then what is P(A ? B)?
A. 0.6
B. 0.4
C. 1
D. 0.8
Answer: A
Mathematics
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Decide whether the expression is or is not an identity.sin (A + 2?) = sin A
A. Identity B. Not an identity
Mathematics
Solve the polynomial inequality.(x + 4)(x + 1)(x - 10) > 0
A. (-?, -4) ? (-1, 10) B. (10, ?) C. (-?, -1) D. (-4, -1) ? (10, ?)
Mathematics
Classify the system as independent, inconsistent, or dependent.-5 = 2x + 9y18y + 4x = -11
A. Dependent B. Independent C. Inconsistent
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 7m4
B. 7m5
C. 7m6
D. 14m2
Mathematics