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maggie123433
21.08.2019 •
Mathematics
Afootball team scored 529 points one season and then 376 points the next. about how many points less did the team score in the second season? round to the nearest ten.
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Ответ:
Option A -37.2°
Step-by-step explanation:
Given : Δ XYZ has vertices
,
and ![Z(x_3,y_3)=(1,2)](/tpl/images/0182/3558/81253.png)
To find: Measure of angle Z (let
)
Solution :
Since we know the vertices we find the slope of line by
Slope formula :![m=\frac{y_2-y_1}{x_2-x_1}](/tpl/images/0182/3558/ab87e.png)
Let
be the slope between X and Z
Now, let
be the slope between Y and Z
Now, to find angle we apply angle-slope formula
Angle-slope formula →![tan\theta=\begin{vmatrix} \frac{m_1-m_2}{1+m_1m_2} \end{vmatrix}](/tpl/images/0182/3558/473c3.png)
Putting values of slopes in the formula,
Refer the attached graph
Therefore, ∠Z= 37.2° option A