Determine whether or not the number is written in scientific notation.2.43 × 109
A. Yes
B. No
Answer: A
Mathematics
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Solve the system of equations.
A. x = 0, y = -2, z = 2; (0, -2, 2) B. x = 2, y = -2, z = 0; (2, -2, 0) C. x = 2, y = 0, z = -2; (2, 0, -2) D. inconsistent
Mathematics
Use Fundamental Identities and/or the Complementary Angle Theorem to find the exact value of the expression. Do not use a calculator.sin2 70° + cos2 70°
A. -1 B. 1 C. 0 D. 2
Mathematics
Solve the problem. Round to the nearest tenth, if necessaryThe whole is 7.3 and the percent is 55. Find the part.
A. 753.4 B. 4 C. 0.7 D. 3.7
Mathematics
For the pair of functions, find the indicated domain.f(x) = 9x + 18, g(x) = x + 5Find the domain of f ? g.
A. (-?, -7) ? (-7, ?) B. (-?, -7] ? [-7, ?) C. (-?, ?) D. (-?, 7) ? (7, ?)
Mathematics