Estimate by rounding as directed.0.06 + 17 + 0.73; nearest one

A. 21
B. 19
C. 16
D. 18


Answer: D

Mathematics

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Determine the type(s) of symmetry (symmetry with respect to the x axis, y axis, and/or origin) exhibited by the graph the equation. Do not sketch the graph.x2 + y2 - 6x - 1 = 0 

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Solve the problem.The life expectancy of inhabitants of a country can be approximated by the equation y = 0.305x - 385, where x is a year between 1940 and 2006 and y is age in years. Use this mathematical model to approximate life expectancy (to the nearest tenth of a year) in 1973.

A. 301.8 yr B. 216.8 yr C. 597.9 yr D. 563.3 yr

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A photograph is to be printed on a rectangle in the divine proportion. If it is 8 cm high, how wide is it, to the nearest centimeter? Assume that the width of the rectangle is larger than the height. ? __________ cm

Fill in the blank(s) with the appropriate word(s).

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Determine whether the given value is a solution to the given equation.Is 25.5 a solution of 4x = 10.2?

A. No B. Yes

Mathematics