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svp [43]
3 years ago
6

What’s the answer for this ? 1-2 question

Mathematics
2 answers:
Anna35 [415]3 years ago
6 0

Answer:

Question 1:

A) Parallelogram

B) Right Angled Triangle

Question 2:

Using parallelogram to use properties of parallel lines. To find whether a quadrilateral is parallelogram, first we will write it's coordinates. After writing coordinates, we find slope of each line by slope formula. After this , we compare the slope of equal lines through which we come to know whether they are parallel to eachother or not. After that, if two pairs of lines are parallel, then the given quadrilateral is a parallelogram.

matrenka [14]3 years ago
3 0
Parallelogram
right angled tri
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Okay, we know that the expenses for the day is 210.

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Recall your d = rt, distance = rate * time

so, notice, it went 504 against the wind, and the return trip, well, unless the road elongated or shrunk somewheres, the return trip is also 504 miles.

now, if say the plane has a still air speed of "p", and the wind has a speed of "w", when it was going against the wind, it wasn't really going "p" fast, it was going "p - w" fast, because the wind was subtracting speed from it.

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\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
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\textit{with the wind}&504&p+w&3
\end{array}
\\\\\\
\begin{cases}
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----------\\
\frac{504}{3}=p+w\implies 168=p+w\\
\qquad 168=p+\boxed{p-144}
\end{cases}
\\\\\\
168=2p-144\implies \cfrac{168+144}{2}=p\implies 156=p
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