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Blababa [14]
3 years ago
6

Can somebody plz help answer these true or false questions correctly thanks!!! (As many as u can or know) :3

Mathematics
2 answers:
Reptile [31]3 years ago
8 0

Answer:

1) true

5)false

2)true

Step-by-step explanation:

hope it helps you...

anzhelika [568]3 years ago
6 0

Answer:

false

true false false false

Step-by-step explanation:

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Please help with this question!! I need serious help!!
asambeis [7]

Answer:

<h2>The circumference is multipled by 4.</h2>

Step-by-step explanation:

The formula of an area of a circle"

A=\pi r^2

The formula of a circumference of a circle:

C=2\pi r

The area multipled by 16:

16A=16\pi r^2\\\\16A=\pi(4^2r^2)\\\\16A=\pi(4r)^2

The radius has increased fourfold, therefore:

C'=2\pi(4r)=4(2\pi r)=4C

The circumference is multipled by 4.

You can calculate the area and check the circumference:

r=11.6\ in\\\\A=\pi(11.6)^2=132.56\pi\\\\16A=(16)(134.56\pi)=2152.96\pi\ in^2

Calculate the radius:

\pi r^2=2152.96\pi             <em>divide both sides by π</em>

r^2=2152.96\to r=\sqrt{2152.96}\\\\r=46.4\ in

Calculate the circumference of both circles:

r=11.6\ in\\\\C=2\pi(11.6)=23.2\pi\ in

r=46.4\ in\\\\C'=2\pi(46.4)=92.8\pi\ in

\dfrac{C'}{C}=\dfrac{92.8\pi}{23.2\pi}=4\to C'=4C

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3 years ago
How many meters tall is a door
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Answer: a standard door is about 2-2.10 meters

Step-by-step explanation:

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400 is another way to right 4 hundreds
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Step-by-step explanation:

On the 8 branch, to the left is 2, and on the right is 4. On the left branch, and on the left, it is 2, and there is a 2 for the 6 branch.

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