Find an expression equivalent to the one given.- 
A. 
B. - 
C. - 
D. - 
Answer: A
Mathematics
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Solve the problem.Find an equation for the level surface of the function f(x, y, z) = 
that passes through the point 
.
A. x + y + z = 13 B. x2 + y2 + z2 = 169 C. x2 + y2 + z2 = 13 D. x + y + z = ± 13
Mathematics
Use scientific notation to perform the following operations. Leave your answer in scientific notation.(4.8 × 1024) ÷ (1.2 × 106)
A. 4 × 1018 B. 4 × 104 C. 4.8 × 1018 D. 4 × 1030
Mathematics
Use a calculator to approximate the expression. Write your answer in scientific notation, and round to the nearest tenth as needed.
A. 7.2 × 108 B. 6.8 × 106 C. 7.6 × 108 D. 7.2 × 106
Mathematics
Use a power-reducing identity to find the exact value of the expression.cos2 (75°)
A. 
B. 
C. 
D. 
Mathematics