If n is a natural number, then 10-n = 
. Negative powers of 10 can be used to write the decimal part of Hindu-Arabic numerals in expanded form. Express the expanded form as a Hindu-Arabic numeral.(2 × 1) + (5 × 10-1)
A. 7
B. 0.10
C. 25
D. 2.5
Answer: D
Mathematics
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Write the equation of the indicated line. Write the equation in slope-intercept form.The line parallel to 
that passes through (3, 3)
A. y = 
x - 
B. y = - 
x - 
C. y = - 
x + 
D. y = - 5x - 18
Mathematics
Simplify the given expression by giving the results in terms of one-half the given angle. Then use a calculator to verify the result.
A. 0.309 B. 0.437 C. 1.9021 D. 0.618
Mathematics
Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = 2x2 - 14x - 16
A. (8, 0), (1, 0), (0, 16) B. (-8, 0), (-1, 0), (0, 16) C. (-8, 0), (1, 0), (0, -16) D. (8, 0), (-1, 0), (0, -16)
Mathematics
Graph the equation.(y - 1)2 = -7(x + 2)
A. 
B. 
C. 
D. 
Mathematics