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Anestetic [448]
3 years ago
8

Write in exponatial form 9 is a factor 20 times

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

9^20

Step-by-step explanation:

brainliest?

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Systems of equations <br> 2x+2y=16<br> 2x+6y=28
Sholpan [36]
2x+2y=16
<span>2x+6y=28

all you have to do is subtract to get rid of the 2x and solve for y

2x+2y = 16
-2x-6y = -28
---------------------------
0 -4y = -12
y = 3

now we got y we can plug in or do the systems of equation again and find x.  lets do systems of equations again. 

</span>2x+2y=16
<span>2x+6y=28
</span><span>
this time i am going to multiple the top by -3  and then add the equations hopefully it is clear why I multiple by -3 
</span><span>
-3(2x+2y = 16)
2x +6y = 28 

-6x - 6y = -48
</span>2x +6y = 28 
------------------------
-4x + 0y = -20

x = 5 
4 0
4 years ago
Read 2 more answers
The figure shown below is composed of a semicircle and a non-overlapping equilateral triangle and contains a hole that is also c
Sloan [31]

Check the picture below.

since we know the radius of the larger semicircle is 8, thus its diameter is 16, which is the length of one side of the equilateral triangle.  We also know the smaller semicircle has a radius of 1/3, and thus a diameter of 2/3, namely the lenght of one side of the small equilateral triangle.

now, if we just can get the area of the larger figure and the area of the smaller one and subtract the smaller from the larger, we'll be in effect making a hole/gap in the larger and what's leftover is the shaded figure.

\bf \stackrel{\textit{area of a semi-circle}}{A=\cfrac{1}{2}\pi r^2\qquad r=radius}~\hspace{10em}\stackrel{\textit{area of an equilateral triangle}}{A=\cfrac{s^2\sqrt{3}}{4}\qquad s=\stackrel{side's}{length}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{\Large Areas}}{\left[ \stackrel{\textit{larger figure}}{\cfrac{1}{2}\pi 8^2~~+~~\cfrac{16^2\sqrt{3}}{4}} \right]\qquad -\qquad \left[ \cfrac{1}{2}\pi \left( \cfrac{1}{3} \right)^2 +\cfrac{\left( \frac{2}{3} \right)^2\sqrt{3}}{4}\right]}

\bf \left[ 32\pi +64\sqrt{3} \right]\qquad -\qquad \left[ \cfrac{\pi }{18}+\cfrac{\frac{4}{9}\sqrt{3}}{4} \right] \\\\\\ \left[ 32\pi +64\sqrt{3} \right]\qquad -\qquad \left[ \cfrac{\pi }{18}+\cfrac{\sqrt{3}}{9} \right]~~\approx~~ 211.38 - 0.37~~\approx~~ 211.01

3 0
4 years ago
What is the volume of the triangle prism? ( HELP PLEASE )
worty [1.4K]

Answer:

270 km³

Step-by-step explanation:

the volume = ½×9×6×10 = 270 km³

3 0
3 years ago
7x+5<br>plz help<br>I really need help been stuck for 20 minutes​
saul85 [17]
What about it? 7x+5 equals what
6 0
3 years ago
Jenya graphed a scatter plot of number of potholes (y) and length of a road in miles (x). She drew the trend line and calculated
viktelen [127]

Answer:

25

Step-by-step explanation:

why not

3 0
3 years ago
Read 2 more answers
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