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Lera25 [3.4K]
3 years ago
6

Which polygons are congruent?

Mathematics
1 answer:
bonufazy [111]3 years ago
4 0
Two polygons are congruent<span> if they are the same size and shape - that is, if their corresponding angles and sides are equal. Move your mouse cursor over the parts of each figure on the left to see the corresponding parts of the </span>congruent<span> figure on the right.</span>
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What is the radius of a sphere if its surface area is 2,122.64 square inches? (Use 3.14 for π.) 11 in. 13 in. 121 in. 169 in.
crimeas [40]
To solve this, we are going to use the surface are of a sphere formula: A=4 \pi r^2
where
A is the surface area of the sphere 
r is the radius of the sphere 

We know for our problem that A=2122.64 and \pi =3.14, so lets replace those vales in our formula:
A=4 \pi r^2
2122.64=4(3.14)r^2
2122.64=12.56r^2
Now, we just need to solve our equation for r:
\frac{2122.64}{12.56} =r^2
r^2=\frac{2122.64}{12.56}
r^2=169
r=+or- \sqrt{169}
r=13 or r=13
Since the radius of a sphere cannot be a negative number, r=13.

We can conclude that the radius of a sphere with surface area <span>2,122.64 </span>in^2 is 13 in.
3 0
3 years ago
How do you inverse 3x-4y=6
vladimir1956 [14]

Answer:

To find the inverse you switch x and y

Step-by-step explanation:

3y-4x=6

So 3y = 4x+6

and Y = 4/3x + 2

5 0
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What's 20 x 12? I NEED HELP
neonofarm [45]

Answer:

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Step-by-step explanation:

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The pairs that equal to 4x-y=10
Tcecarenko [31]
You can work it out by using trial and error

so you get

x=3 , y=2
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1. Write the following as decimals<br>75<br>1<br>(a) 16% (b)<br>(c) 0.1% (d)<br>100<br>16​
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Answer:

the question isnt clear

Step-by-step explanation:

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3 years ago
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