Solve the problem.How many five-card hands chosen from a standard deck contain two spades and three clubs?
A. 267,696
B. 19,960
C. 9295
D. 22,308
Answer: D
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the x-axis and the curve y = 7sin x, 0 ? x ? ?
A. =
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=
B. =
,
=
C. = ?,
=
D. =
,
=
Translate using numbers and symbols.five times the sum of six and ten
A. (5 + 6) ? 10 B. 5 ? 6 ? 10 C. 5(6 + 10) D. 5 ? 6 + 10
Describe the inverse of the statement.Add 1 to x and divide the result by -9.
A. Divide x by -9 and then add 1.
B. Multiply x by -9 and then subtract 1.
C. Add -1 to x and divide the result by - .
D. Subtract 1 from x and multiply the result by -9.
Solve the problem.A certain radioactive isotope has a half-life of approximately 1300 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 25% of that amount?
A. 975 yr B. 2575 yr C. 2600 yr D. 540 yr