Express the number in scientific notation.0.0000004
A. 4 × 10-6
B. 4 × 10-8
C. 4 × 10-7
D. 4 × 10-9
Answer: C
Mathematics
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Estimate. Choose a rounding digit that gives one or two nonzero digits.4.5 × 2.63
A. 8 B. 1.5 C. 0.8 D. 15
Mathematics
Write the indicated term of the binomial expansion.(2x + 4)5; 5th term
A. 5120 B. 1280x2 C. 640x D. 2560x
Mathematics
Graph the system of inequalities, and find the coordinates of the vertices.y ? 4 - 2xx ? 1
A. 
B. 
C. 
D. 
Mathematics
The function f is one-to-one. Find its inverse.f(x) = x3 - 1
A. f-1(x) = 
+ 1
B. f-1(x) = 
- 1
C. f-1(x) = 
D. f-1(x) = 
Mathematics