Because the cos theta < 0 then theta must be an obtuse angle
so a^2 + b^2 < a^2
C
Since they reduced the markup price, or higher price, by 10%, the new markup price is 20% over the manufacturer price.
<span>Changing the grouping of the addends should not change the sum, according to the associative property of addition. You might group them differently with (50 + 3) + 47, so that you have 50 + (3 + 47). You might not regroup them with (16 + 4) + 5 rather than 16 + (4 + 5).</span>
Slope = change in y / change in x
= (15 - 9) / (7 - 5)
= 6 / 2
= 3
