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SIZIF [17.4K]
3 years ago
13

In parallelogram WXYZ, what are the coordinates of the point of intersection of WY and ZX?

Mathematics
1 answer:
a_sh-v [17]3 years ago
8 0

Answer:

Point of intersection of WY and ZX is (3.5, 3.5).

Step-by-step explanation:

Since, diagonals of a parallelogram bisect each other,

Point of intersection of the diagonals will be midpoint of each diagonal.

By this property, midpoint (x, y) of the segment joining W(-2, 6) and Y(9, 1) will be,

x=\frac{x_1+x_2}{2}

x = \frac{-2+9}{2} = 3.5

Similarly, y-coordinate of the midpoint will be,

y = \frac{y_1+y_2}{2}

y = \frac{6+1}{2} = 3.5

Therefore, point of intersection of the diagonals of the given parallelogram will be (3.5, 3.5).

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Use a special right triangle to write sin 30° as a fraction.
borishaifa [10]

Answer:

1/2

Step-by-step explanation:

So do this, think of an equilateral triangle. A 30-60-90 triangle is just half of an equilateral triangle. If the original side length was x, then the hypotenuse is x, one leg is x/2, and the third, by Pythagorean theorem, is x sqrt3

Sin is opposite over hypotenuse, so we have (x/2)/x = 1/2

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3 years ago
(x^2 + 4x + 4) simplify
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3 years ago
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The sum of two numbers is 30 and their difference is 20
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5 and 25

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3 years ago
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If an exterior angle of a regular polygon is 21.2° how many sides does the polygon have?
rosijanka [135]
\bf \textit{sum of all exterior angles in a polygon}\\\\
n\theta =360\quad 
\begin{cases}
n=\textit{number of sides}\\
\theta =\textit{angle in degrees}\\
----------\\
\theta =21.2^o
\end{cases}\implies n21.2=360
\\\\\\
n=\cfrac{360}{21.2}\implies n\approx 16.981132\implies n\approx 17

the reason why the value is not an integer, is most likely because the 21.2<span>° is just an approximation.</span>
8 0
3 years ago
In a polynomials equation do you add the exponents if they are different
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You can only add exponents if you are multiplying two of the same variable together. For example,
x^{12} \times x^4 = x^{16}

You take them away if you are dividing.
<span>x^{12} \div x^4 = x^{8}

In a polynomial equation, you can add together two of the same variable if they have the same exponent
</span>3x^4 + 7x^4 = 10x^4

Or you can take them away in a similar fashion,
<span>3x^4 - 7x^4 = -4x^4

But you cannot add two (or more) different exponents,
</span>6+4x+7x^2 = 6+4x+7x^2 (it does not get any simpler)

I hope this has answered your question, if not, leave a comment and I'll update the answer.
4 0
4 years ago
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