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Ray Of Light [21]
3 years ago
8

How do you do this? Why's the answer??

Mathematics
2 answers:
spayn [35]3 years ago
8 0
By eliminating the variable an then simplifying. Hope this helps :)
Natasha_Volkova [10]3 years ago
6 0
Well idk maybe find out p then add

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A regular pentagon ABCDE is shown <br><br><br> Work out the size of X
nikdorinn [45]
The sum of the angles in a pentagon is 540°.

This means that each angle is 108°.

Inside you pentagon, a triangle is drawn. This triangle is isosceles, because the corners are on the points of the regular pentagon. You know that angle C is 108°.

Angles in a triangle add up to 180°.

B and D will be the same size as this is isosceles.

180°-108° = 72°

This is B and D. You only need one of these, so you divide by 2.

The answer is 36°.

Hope this helps :)
7 0
3 years ago
Read 2 more answers
Find the equation of the line that is perpendicular to y = – 1 4 x – 8 and passes though the point (2, –4).
vivado [14]

The equation of the line is y=\frac{1}{4}x-\frac{29}{7}

Explanation:

The equation of the line is perpendicular to y=-14 x-8

The equation is of the form y=mx+b where m=-14

<u>Slope:</u>

The slope of the perpendicular line can be determined using the formula,

m_1 \cdot m_2=-1

-14 \cdot m_2=-1

       m_2=\frac{1}{14}

Thus, the slope of the line is m=\frac{1}{14}

<u>Equation of the line:</u>

The equation of the line can be determined using the formula,

y-y_1=m(x-x_1)

Substituting the slope m=\frac{1}{14} and the point (2,-4), we get,

y+4=\frac{1}{14}(x-2)

Simplifying, we get,

y+4=\frac{1}{14}x-\frac{1}{7}

     y=\frac{1}{14}x-\frac{1}{7}-4

     y=\frac{1}{4}x-\frac{29}{7}

Thus, the equation of the line is y=\frac{1}{4}x-\frac{29}{7}

3 0
3 years ago
I need some assistance with a math problem.
NikAS [45]

The answer is A. H(-4,2) I(-9,2) J(-9,-2) K(-2,-2)

4 0
3 years ago
100 = 10 to the power of what
Greeley [361]

Answer:

10 to the power of 2

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
From the top of a building, the angle of depression to a point 200 ft in front of the building is 72º. How high is the building?
GaryK [48]

Answer:

x ≈ 50.76

Step-by-step explanation:

Sin72º = \frac{x}{200}

200Sin72º

x ≈ 50.76

Hope this is helpful :')

7 0
3 years ago
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