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dybincka [34]
3 years ago
13

What statement is used to prove thatquadrilateral ABCD is a parallelogram?

Mathematics
1 answer:
torisob [31]3 years ago
3 0
Either way a parallelogram is a quadrilateral with two pairs of parallel sides.
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What is the length of the altitude of the equilateral triangle below?
Mazyrski [523]

ANSWER

The length of the altitude is 3\sqrt{3} units


<u>EXPLANATION</u>

The altitude of a triangle is the vertical height of the triangle.


From the diagram the altitude is a


Method 1: We can use Pythagoras theorem to find a


6^2=a^2+3^2


6^2-3^2=a^2


36-9=a^2


27=a^2


We take the square root of both sides,

\sqrt{27}=a


\sqrt{9\times3}=a


\sqrt{9} \times \sqrt{3}=a


3\sqrt{3}=a


Method 2 Using Trigonometry

sin(60\degree)=\frac{a}{6}

6sin(60\degree)=a


a=6\times \frac{\sqrt{3}} {2}


a=3\sqrt{3}






6 0
3 years ago
Read 2 more answers
Eugene had 24$ to spend on three pencils. After buying them he had 18$. How much did each pencil coast?
Helga [31]
Each pencil costed $2.
7 0
2 years ago
Please actually answer this it has a good amount of points!
Vanyuwa [196]

The answer is D, "No, because two points with the same x-value have different y-values."

Essentially, there cannot be more than one point on the same x-line. Point (2, 11) and point (2, 2) are on the same x-line, which is 2.

Hope this helps!

6 0
2 years ago
Given that f(x)=12(3x+4)what is the value of (3)
kumpel [21]

Answer:

f(3)= 156

Step-by-step explanation:

f(x)=12(3x+4)

f(x)=12(3(3)+4) =12(9+4) = 12(13) = 156

f(3)= 156

4 0
2 years ago
The chimney hill neighborhood was surveyed to find out how many televisions sets were in each household. There were a total of 2
marishachu [46]

The Answer: 67

201/3=67

7 0
3 years ago
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