The number of DVDs sold at a store in a month was 930 and the number of DVDs sold decreased by 12 per month. The number of Blu-ray discs sold in the same store in the same month was 512 and the number of
Blu-ray discs sold increased by 26 per month Let d represent the number of discs sold and represent the
d-930 - 127
The system of equations
d=512 +267
can be used to represent this situation
time in months
If this trend continues, how many months will the number of DV's sold equal the number of Blu-ray discs
sold? How many of each is sold in that month?
There will be
DVDs and Blu-Ray discs sold per month in
months.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)

a reflection across line m

step-by-step explanation:

the first transformation is a 90 degree rotation counterclockwise around the point g. this gets to image gh'j'k'. when the image gh'j'k' is reflected over the line  m the result is g'h"j"k". the final transformation is a reflection over the line  m.