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den301095 [7]
3 years ago
13

Doing test corrections and still have no clue what to do

Mathematics
2 answers:
Mkey [24]3 years ago
7 0
Exterior angle = 180- Interior angle

Exterior angle = 180 - 168 = 12 degrees

So each exterior angle on the polygon is 12 degrees. 

Now every polygon has a total of 360 degrees in exterior angles, so how many 12 degree angles fit into 360 degrees. 

360/12 = 30 sides :) 
nirvana33 [79]3 years ago
6 0
The answer would be 30 sides
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D = {x|x is a whole number} E = {x|x is a perfect square between 1 and 9} F = {x|x is an even number greater than or equal to 2
ser-zykov [4K]
<span>E = {x|x is a perfect square between 1 and 9} = {1,4
</span><span>F = {x|x is an even number greater than or equal to 2 and less than 9}
</span><span>D = {x|x is a whole number}
</span>
answer
D ∩ (E ∩ F) = 4
4 0
4 years ago
Given the vectors u = &lt;5,-1&gt; and v = &lt;1,12&gt;, find -7u-3v. *
zepelin [54]

You multiply vectors and scalar simply by multiplying each component by that scalar:

-7u = \langle-35,7\rangle,\quad -3v=\langle -3,-36\rangle

Finally, you sum two vectors by summing the correspondent coordinates:

-7u-3v = \langle-35,7\rangle+\langle -3,-36\rangle = \langle-38,-29\rangle

4 0
3 years ago
Hey! Could I get a lil bit of help? (10 points)
GrogVix [38]

Answer:

<em>Neither A nor B</em>

Step-by-step explanation:

Neither set of order pairs represent a function, because none of the points have a correlating function throughout them.

4 0
3 years ago
Read 2 more answers
Help please I attached a image
Lina20 [59]

Answer:

the answer is the square of 13

Step-by-step explanation:

a= 2 and b=3, square both and that equals 4 and 9. using pythagorean theorem 4+9=12=the distance between a and b :D

7 0
3 years ago
Please help like rn !!!!!!!!!!!!!!!
forsale [732]

Answer:

$455.84

Step-by-step explanation:

find area of the two halves of the circle and the rectangle

area of circle= \pi r^{2}

where r= 2 ft

therefore

\pi (2)^{2}\\=12.56  ft^{2}

area of rectangle= w*l

where w= 4ft and l= 5ft

therefore

(4)(5) \\=20 ft^{2}

add areas together

12.566 + 20 \\=32.56 ft^{2}

it costs $14 per square foot and there are 32.566 square feet, so multiply

14 * 32.56 \\= $455.84

3 0
3 years ago
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