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Galina-37 [17]
3 years ago
5

Please help, it’s linked to polygons

Mathematics
1 answer:
jekas [21]3 years ago
5 0

Answer:

It has 15 sides.

Step-by-step explanation:

( n-2 ) × 180 / n = 156

180n - 360 = 156n .


180n - 156n = 360

24 n = 360

n = 360/24 = 180/12 = 90/6 = 15 .

n = 15 sides.

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Solve forx.<br> (-2+4)<br> 11<br> 1<br> 18<br> -18<br> 2<br> 9<br> 3<br> -9
Greeley [361]

Answer:

2

Step-by-step explanation:

come on man if you are in -2 dollar debt and someone gives you 4 more dollars you now have 2 dollars

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4 years ago
(x^4 -6x^2-24)/(x-2)<br><br> synthetic division
allsm [11]
X^3+2x^2-2x-4 remainder -32/X-2
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3 years ago
Determine the intercepts of the line 2x+5y=-6?
SVETLANKA909090 [29]

Answer:

The x intercept is (-3,0)

The y intercept is (0,-6/5)

Step-by-step explanation:

To find the x intercept, set y =0 and solve for x

2x+5y=-6

2x+0 = -6

Divide by 2

2x/2 = -6/2

x = -3

The x intercept is (-3,0)

To find the y intercept, set x =0 and solve for y

2x+5y=-6

0+5y = -6

Divide by 5

5y/5 = -6/5

y = -6/5

The y intercept is (0,-6/5)

7 0
3 years ago
Area of part of a circles
Fantom [35]

Answer:

56.55 or 18pi

Step-by-step explanation:

Pi time radius squared divided by two

6 0
3 years ago
A 14 ​-pound mixture of coffee that contains both decaffeinated and regular coffee costs ​$37. The decaffeinated coffee costs ​$
nikdorinn [45]

Answer:

The number of pounds of:

Decaffeinated coffee = x = 5 pounds

Regular coffee = y = 9 pounds

Step-by-step explanation:

A 14 ​-pound mixture of coffee that contains both decaffeinated and regular coffee costs ​$37. The decaffeinated coffee costs ​$2 per​ pound, and the regular coffee costs ​$3 per pound.

Let the number of pounds of:

Decaffeinated coffee = x

Regular coffee = y

Hence, our system of equations =

x + y = 14..... Equation

x = 14 - y

2x + 3y = 37....... Equation 2

We substitute 14 - y for x in Equation 2

= 2(14 - y) + 3y = 37

= 28 - 2y + 3y = 37

= - 2y + 3y = 37 - 28

= y = 9 pounds

Solving for x

x = 14 - y

x = 14 - 9

x = 5 pounds

Therefore,

The number of pounds of:

Decaffeinated coffee = x = 5 pounds

Regular coffee = y = 9 pounds

7 0
3 years ago
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