D is not in correct scientific notation. To be correct, the answer would be 5.0 x 10^2
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Information is either qualitative or quantitative
Qualitative data is described with words
Quantitative data is described with numbers
Quantitative Information is expressed using numbers
X + y = 10
x - y = 2
add the equations together
2x = 12
x = 6
6 + y = 10
y = 3
Here is the work:
(13x - 5x) + 12 - 2y = 6
(8x) + 12 - 2y = 6
-2y = -8x - 12 + 6
-2y = -8x - 6
y = 4x + 3
4 1/5
hope this helped, im better at algebra tho :)
