Use the distributive property to perform the calculation.5 ? 19
A. 5 ? 19 = 5(20 - 1) = 100 - 5 = 95
B. 5 ? 19 = 5(20 - 1) = 100 - 5 = 105
C. 5 ? 19 = 5(20 - 1) = 100 - 1 = 99
D. 5 ? 19 = 5(20 - 1) = 100 - 20 = 80
Answer: A
Mathematics
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Classify the number as one or more of the following: whole number, integer, rational number, irrational number, or real number.71
A. Whole number, integer, real number B. Whole number, integer C. Whole number, integer, rational number, real number D. Real number
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Find the product.(4x - 5y)2
A. 4x2 + 25y2 B. 16x2 - 40xy + 25y2 C. 4x2 - 40xy + 25y2 D. 16x2 + 25y2
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Solve the equation. Express radicals in simplest form.x2 = 49
A. 24.5 B. ±8 C. 7 D. ±7
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Convert the measurement as indicated. If necessary, write answers as mixed numbers.75°C
A. 192.6°F B. 141.4°F C. 73.3°F D. 167°F
Mathematics