Write an inequality to describe the situation.In order for a chemical reaction to remain stable, its Celsius temperature must be less than  For which Fahrenheit temperatures will the reaction remain stable? To convert a Fahrenheit temperature to its Celsius equivalent, we use the formula C = (F - 32).

A. (F - 32) ? 73.43
B. C + 32 ? 73.43
C. (F - 32) > 73.43
D. (F - 32) < 73.43


Answer: D

Mathematics

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Draw an appropriate Venn diagram and use the given information to fill in the number of elements in each region.n(A) = 30, n(B) = 28, n(C) = 35, n(A ? B) = 12, n(A ? C) = 15, n(B ? C) = 14, n(U) = 67

A.

B.

C.

D.

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Solve.x2 + y2 = 145xy = 12

A. (12, 1), (1, 12), (-12, -1), (-1, -12) B. (1, 1), (1, 12), (-1, -1), (-1, -12) C. (24, 1), (1, 12), (-24, -1), (-1, -12) D. (12, 1), (2, 12), (-12, -1), (-2, -12)

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Round as indicated.6489 to the nearest ten

A. 6490 B. 6480 C. 6590 D. 6500

Mathematics

Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - x

A. - x; 2
B. 2
C. 2
D. 9; 2

Mathematics