Evaluate the expression, if possible.
A. 4
B. not a real number
C. -64
D. -4
Answer: A
Mathematics
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Write the number in scientific notation.130,000
A. 1.3 × 10-6 B. 1.3 × 106 C. 1.3 × 105 D. 1.3 × 10-5
Mathematics
Solve the problem.Two angles are complementary if their sum is 90°. If the measure of the first angle is x°, and the measure of the second angle is (3x - 2)°, find the measure of each angle.
A. 1st angle = 23°; 2nd angle = 67° B. 1st angle = 22°; 2nd angle = 68° C. 1st angle = 31°; 2nd angle = 59° D. 1st angle = 22°; 2nd angle = 64°
Mathematics
Write out the first five terms of the sequence.an = n2 - n
A. 2, 6, 12, 20, 30 B. 0, 3, 8, 15, 24 C. 1, 4, 9, 16, 25 D. 0, 2, 6, 12, 20
Mathematics
Simplify.81 ÷ 3 + {5 × [18 - (6 × 2)]}
A. 52 B. 47 C. 57 D. 60
Mathematics