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Adding and Subtracting in Scientific Notation: Mastery Test
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The table gives the populations of three countries in 2013.
United States
Brazil
Germany
3.16 x 108
1.96 x 108 8.0 x 107
Arrange the sums and differences in increasing order of their values.
the difference of
the populations
of Germany and
Brazil
the sum of the
populations of
the United States
and Brazil
the difference of
the populations
of Brazil and the
United States
the sum of the
populations of
Brazil and
Germany

When constructing a perpendicular line through a point off a line, how can you verify that the lines constructed are perpendicular? check the angles used in the construction with a straightedge to ensure consistency. check the distance along the lines at several places with a compass to ensure they are the same length. check the intersecting lines with the corner of a piece of paper to ensure the lines create 90° angles. check the distance between the lines at several places with a compass to ensure they are equidistant. question 2(multiple choice worth 1 points) (01.03 lc) which of the following steps is included in the construction of a perpendicular line through a point on a line? connect arcs that are above and below the given line with a straightedge. connect arcs that are above the original line with a straightedge. create arcs on either side of a point that is off the given line. create a copied angle by using the first two lines as the original angle.