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Delvig [45]
3 years ago
5

How many sides does a regular polygon have if one exterior angle is 90 degrees? 3 4 5 6?

Mathematics
2 answers:
Ray Of Light [21]3 years ago
4 0

Answer:

4 sides

B is correct

Step-by-step explanation:

A regular polygon has each exterior angle is equal.

The sum of all angle of exterior angles of regular polygon is 360°

For given regular polygon each exterior angle is 90°

Let use n number of side of polygon or n exterior angles.

Total sum of exterior angles = 90n

It must be equal to 360° because sum of all exterior angles.

90n = 360°

    n = 4

Hence, The number of sides of regular polygon whose each exterior angle 90° is 4

LenKa [72]3 years ago
3 0
The easiest way to do this is to find out the interior angle and divide that number into 360. (The figure is regular meaning all sides are equal. And so are all interior angles).

The interior angle is always the supplement of the exterior angle. In this case 180 - 90 = 90 which is the interior angle.  The regular figure you have drawn is a square. It has 4 sides.
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Aaron bought 8 red flags for the parade. Large flags cost $20 each. Medium flags cost $12 each. Aaron spent $112 in all. How man
andrew11 [14]

Answer:

Step-by-step explanation:

Price assuming he bought all large flags: 20*8=160

Amount of money more: 160-112=48

Difference of price in both flags: 20-12=8

Medium Flags: 48\div8=6

Large Flags: 8-6=2

----------------------------------

The reason why this works, is because the amount of money more comes from the difference between both flags.

6 0
3 years ago
Can you help me with this it’s so confusing plz help me with both is this
mars1129 [50]

Answer:

First picture: -4,913

Second picture: 20.25

Step-by-step explanation:

-17^5/-17^2 = -17^3

-17 × -17 × -17 = -4913

4.5^5/4.5^3 = 4.5^2

4.5 × 4.5 = 20.25

Do you see how I had the same whole number on the top and bottom? (17 was on top and 17 was on bottom)

The exponents were those tiny numbers you saw.

Whenever you are dividing by the same whole number (-17/-17), you can subtract exponents.

When you multiply the same whole number, you can add the exponents.

Hope this helps! Best of luck :)

5 0
3 years ago
How many isosceles triangles appear in this figure? Given: ca=ce<br> 1<br> 2<br> 3<br> 4
soldier1979 [14.2K]
I can’t see your picture what do it say?
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Write the number seven hundred fifty -one with digits
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6 0
3 years ago
Which graph represents the solution set of the system of inequalities?
vivado [14]
Solve first for the solution of the inequalities. This can be done by replacing first the inequalities sign with the equal sign. 

x + y = 1
2y = x - 4

The values of x and y from the system of linear equation are 2 and -1. This means that the intersection of the lines should be at point (2, -1). 

Substitute 3 to x and determine the value of y from the second inequality.
 2y ≥ x - 4

Substituting,
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Hence, the solution to this item should be the fourth one. 
6 0
3 years ago
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