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2 years ago

the sum of the measures of the interior angels of a convex polygon is 3240 classify the polygon by the number of sides

Mathematics

1 answer:

Ipatiy [6.2K]2 years ago

5 0

Answer:

20-gon

Step-by-step explanation:

First we start with the formula to find what the sum of angles will be if we know the number of sides.

S=(n-2)*180 where S is the sum of angles and n is the number of sides.

Normally you'd plug in n to find S, but you can do the opposite too.

3240=(n-2)*180

Let me know if you need help working it from here.

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With full explanation from the internet like before 3x2-6x+5=0

Elodia [21]

Answer:

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Explanation:

Given Expression:

3x² - 6x + 5 = 0

Use the Quadratic Formula:

$\sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a} \ \ when \ \ ax^2 + bx + c = 0$

insert coefficients

$\Longrightarrow \sf x = \dfrac{-\left(-6\right)\pm \sqrt{\left(-6\right)^2-4\cdot \:3\cdot \:5}}{2\cdot \:3}$

$\Longrightarrow \sf x = \dfrac{\left6\right\pm \sqrt{-24} }{6}$

$\Longrightarrow \sf x = \dfrac{\left6\right\pm 2\sqrt{6}i}{6}$

$\Longrightarrow \sf x =1 \pm i\dfrac{\sqrt{6} }{3}$

$\Longrightarrow \sf x=1+i\sqrt{\dfrac{2}{3}}, \quad 1-i\sqrt{\dfrac{2}{3}}$

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2 years ago

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Alex_Xolod [135]

Answer:

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Step-by-step explanation:

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2 years ago

If P( A or B) = 2/5, P(B)=1/4 and P( A and B) = 1/10 find P(A)

natulia [17]

Answer:

p(a) = -3/20

Step-by-step explanation:

p ( a +b) = p(a)+p(b)

1/10= p(a) +1/4

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p(a) = -3/20

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2 years ago

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Step-by-step explanation:

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1 year ago

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Vinvika [58]

Answer:

N/A

Step-by-step explanation:

The n has be divisable by to where that number plus 2 equals 2.

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2 years ago

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