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3 years ago

Each interior angle of the regular n-gon has a measure of 140

1 answer:

6 0

Sum of internal angles of any polygon is: (n-2)x180
So measure of an interior edge is ( ( n - 2 ) x 180 ) / n = 140
So 140n = 180n - 360
40n = 360
n = 9
So it's a nonagon.

Hope this helps :)

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Which number line shows -4 , 1,1 and 2 correctly plotted

Colt1911 [192]

Answer:

Step-by-step explanation:

The number line in option C contains the points -4, -1, 1 and 2 correctly plotted.

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2 years ago

Find an equation of the line that has the given slope and contains the given point. m=7/3 (1,6)

iris [78.8K]

The point-slope form:

$y-y_1=m(x-x_1)$

We have the point (1, 6) and the slope m = 7/3. Substitute:

$y-6=\dfrac{7}{3}(x-1)$ use distributive property

$y-6=\dfrac{7}{3}x-\dfrac{7}{3}$ add 6 to both sides

$y=\dfrac{7}{3}x+\dfrac{11}{3}$ multiply both sides by 3

$3y=7x+11$ subtract 7x from both sides

$-7x+3y=11$ change the signs

$7x-3y=-11$

Answer:

point-slope form: $y-6=\dfrac{7}{3}(x-1)$

slope-intercept form: $y=\dfrac{7}{3}x+\dfrac{11}{3}$

standard form: $7x-3y=-11$

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3 years ago

2y to the 2nd power +11y +14

goldfiish [28.3K]

$2y^2 +11y+14$ $=(2y+7)(y+2)$

Step-by-step explanation:

Given

$2y^2 +11y+14$

$=2y^2 +(7+4)y+14$

$=2y^2+7y+4y+14$

$= y(2y+7) + 2(2y+7)$

$=(2y+7)(y+2)$

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3 years ago

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3 years ago

Using the method of substitution solve the problem need help completely loss if you can do it quickly it would help

miv72 [106K]

Equation 1) y=x+3
Equation 2) y=2x+5

Rearrange both equations so that (x) and (y) are on the same side.

1) -x+y=3
2) -2x+y=5

Subtract equations with each other.

x=-2

Plug in -2 for (x) in equation 1.

y=(-2)+3

Simplify.

y=1

(-2, 1)

~Hope I helped!~

3 0

3 years ago