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Varvara68 [4.7K]
3 years ago
7

Which of the following polygons can form a regular tessellation?

Mathematics
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

option A.

Step-by-step explanation:

The regular polygons that can be used to form a regular tessellation are an equilateral triangle, a square, and a regular hexagon.

HOPE THIS HELPS.

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Precalculus PLEASE HELP ME right answers only check all please
Alex_Xolod [135]

Given :

cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=-\frac{\sqrt{2}}{2}

We know the identity

cos(x)cos(y) + sin(x)sin(y)=cos(x-y)

We use this property to simplify the left hand side

So  cos(x)cos(\frac{\pi }{7}) + sin(x)sin(\frac{\pi }{7})=cos(x - \frac{\pi }{7})

cos(x - \frac{\pi }{7}) =-\frac{\sqrt{2}}{2})

we know ,

when cos(x) =-\frac{\sqrt{2}}{2}) then

x = \frac{3\pi }{4} , \frac{5\pi }{4}

For  cos(x - \frac{\pi }{7}) =-\frac{\sqrt{2}}{2})

x - \frac{\pi }{7}= \frac{3\pi }{4} and x - \frac{\pi }{7}= \frac{5\pi }{4}

Add \frac{\pi }{7} on both sides

x= \frac{3\pi }{4} + \frac{\pi }{7} and x= \frac{5\pi }{4} +\frac{\pi }{7}

Finally we add 2npi for general solution

So options C  and D  are correct


6 0
3 years ago
HELP PLEASE
Free_Kalibri [48]

D.The puppy gains approximately 0.25 pound each week.

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3 0
3 years ago
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The surface area of yringaler prism​
Trava [24]

Answer:

180 cm

Step-by-step explanation:

2(3*10) = 60

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7 0
3 years ago
A student desk has an area of 15/16 square meters. The width of the desk is 5/4 meters. What is the length of the desk in meters
olga_2 [115]
For this case, the first thing we are going to do is model the desk as a rectangle.
 The area of the rectangle is given by:
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 Where,
 w: width
 l: length
 Clearing we have:
 l = A / w
 Substituting values:
 l = (15/16) / (5/4)
 Rewriting we have:
 l = (15/16) * (4/5)
 Simplifying we have:
 l = (3/4) m
 Answer:
 
The length of the desk in meters is:
 
l = (3/4) m
7 0
3 years ago
Which ordered pair is in Quadrant IV?
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Well,

The ordered pair in option C would be located in Quadrant IV.

In quadrant IV, all ordered pairs are as follows: (+,-), because it is to the right of zero on the x axis and below zero on the y axis.
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