Solve.-x2 + 81 = 0
A. -9
B. -1, 81
C. -9, 9
D. 9
Answer: C
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Determine if the two fractions are equivalent.
and 
A. equivalent B. not equivalent
Use a positive rational exponent to write the expression.
? 
A. x7/11 B. x11/7 C. x37/30 D. x30/37
Write the sample space for the experiment. A coin is tossed, and then a die is rolled.
A. S = {(heads, tails, 1, 2, 3, 4, 5, 6)}
B. S = {(heads, 1), (heads, 2), (heads, 3), (heads, 4), (heads, 5), (heads, 6), (tails, 1), (tails, 2), (tails, 3), (tails, 4), (tails, 5), (tails, 6)}
C. S = {(2, 6)}
D. S = {(1, heads), (2, heads), (3, heads), (4, heads), (5, heads), (6, heads), (1, tails), (2, tails), (3, tails), 
(5, tails), (6, tails)}
Use Heron's formula to find the area of the triangle. Round to the nearest square unit.a = 10 inches, b = 14 inches, c = 6 inches
A. 33 square inches B. 26 square inches C. 24 square inches D. 35 square inches