Add.-4 + (-19) + (-1) + (-24)
A. -38
B. -2
C. -48
D. -40
Answer: C
Mathematics
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Find the area. Use 3.14 for ? as necessary.
A. 260 ft2 B. 200 ft2 C. 430 ft2 D. 860 ft2
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Solve the problem.In the formula A(t) = A0ekt, A is the amount of radioactive material remaining from an initial amount A0 at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope decays at a rate of 0.3% annually. Determine the half-life of this isotope, to the nearest year.
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Write the equation with rectangular coordinates.
?
?
A.
B.
C.
D.
E.
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Multiply. Write your answer in a + bi form.(1 - 4i)2
A. -15 - 8i B. 1 + 8i C. 17 - 8i D. 1 - 24i
Mathematics