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sergiy2304 [10]
3 years ago
8

How many sides does a polygon have if the sum of its interior angles is 1,260º?

Mathematics
1 answer:
erica [24]3 years ago
3 0
The sum of interior angle is = 180(n-2) where n denotes the number of sides
so 1260° =180(n-2),  n -2= 1,280/180=7, so n=7+2=9
the answer is <span>C. 9

</span>
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What is an equation of the line that passes through the point (6,0) and is perpendicular to the line 3x+4y=20
My name is Ann [436]

Answer:

The equation of the line is y = 4/3x - 8

Step-by-step explanation:

In order to find this, we first have to find the slope of the original line. We do this by solving for y.

3x + 4y = 20

4y = -3x + 20

y = -3/4x + 5

Now that we have the slope of -3/4 we can find the perpendicular slope. The perpendicular slope of any time is the opposite and reciprocal slope. So we flip -3/4 to get -4/3 and then we make it positive (4/3). Now that we have our new slope, we can input it along with the point into point-slope form to find the equation.

y - y1 = m(x - x1)

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7 0
3 years ago
Laurague here is your answer:)
gayaneshka [121]
Got it :)Thank you!!!!!!!
3 0
3 years ago
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Svetradugi [14.3K]
Joe will have eaten 24/30
Jane will have eaten 5/30
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7 0
3 years ago
David roller skates with a constant speed of 12kmh how far can he travel in 3 hours
Leona [35]

Answer:

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6 0
3 years ago
Read 2 more answers
15 × u= 135<br> ---------------
NARA [144]

Answer:

15u = 135

Divide both sides by 15

u = 135/15 = 9

U is equal to 9

Hope this helps!

8 0
2 years ago
Read 2 more answers
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