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3 years ago

Find the area of a regular polygon

Mathematics

1 answer:

Dimas [21]3 years ago

4 0

Answer:

(N-2)x180=sum of interior angles

So (5-2)x180=540

Divided by number of sides=540/4=108... then each angle is 108 divide to triangles ..so they will have 2 angles =54 2 sides =4 the last angle =72 ."of the triangle " area of triangle =1/2xsxsxsin(side in

between)

So 1/2x4x4xsin(72)= then multiply it by 5 as u will have 5 triangles .. so it will be 190.2(probably i tried)

Step-by-step explanation:

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Find the solution of the system of equations.<br><br> 15x -4y = -50<br><br> 3x - 2y = -16

Fittoniya [83]

Answer:

15x - 4y =-50 -----(i)

3x - 2y=-16 --------(ii)

Using Substitution

From (i)

15x=4y-50

x=4y-50/15

Substitute x=4y-50/[15] into eqn (ii)

3x - 2y= -16

3[4y-50]/15 - 2y =-16

Multiply through by 15 to clear the fraction

3(4y - 50) - 30y=-240

12y - 150 -30y=-240

12y-30y=-240+150

-18y = -90

y=90/18

y=5.

Substitute into any eqn of choice to get x

3x - 2y=-16

3x - 2(5)=-16

3x - 10=-16

3x=-16+10

3x=-6

x=-6/3

x=-2.

x= -2

y=5

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3 years ago

Write a two step problem that contains a hidden question about buying something at the mall tell what the hidden question is and

suter [353]

Answer:

Step-by-step explanation: -3.59

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4 years ago

A stack of books is 35 inches high. If each book is 1 3/4 inches thick, how many books are in the stack?

boyakko [2]

Answer:

20 books

Step-by-step explanation:

Height of stack = 35 inches

Thickness of one book $=1\frac{3}{4} =\frac{7}{4}\: in$

No. of books

$= 35 \div \frac{7}{4} \\ \\ = 35 \times \frac{4}{7} \\ \\ = 5 \times 4 \\ \\ = 20$

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3 years ago

A video game store was getting rid of old games, selling them 3 for $34.26.If they sold 2 games, how much money would they have

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4 years ago

Read 2 more answers

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otez555 [7]

Answer:

(A) It would have to lie on AB because DC would rotate halfway around M. B would lie on D and A would lie on C.

(B) AD would lie on the BC line. D would lie on B and A would lie on C.

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2 years ago