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Andrej [43]
3 years ago
10

What happens to the circumference of a circle when the radius is quadrupled?

Mathematics
2 answers:
kogti [31]3 years ago
6 0
He circumference of a circle<span> is equal to the diameter times pi. So, let's look at </span>what happens<span> if you double the </span>radius<span> of a </span>circle<span> -- say from 2 to 4. The area will go from 12.56 to 50.24. This means that it has </span>quadrupled<span>.</span>
Zolol [24]3 years ago
5 0
Circumference = 2 * PI * radius
The circumference would also be quadrupled.
There is a direct relationship between circumference and radius.

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Evaluate: 955-105 x 4 +118
drek231 [11]

Answer: −420x+1073

Step-by-step explanation:

Let's simplify step-by-step.

955−105x(4)+118=955+−420x+118

Combine Like Terms:

=955+−420x+118=(−420x)+(955+118)=−420x+1073

Answer: =−420x+1073

6 0
3 years ago
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Can you help me find the LCM of 6 and 15
MatroZZZ [7]
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7 0
3 years ago
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15 is 23% of what number
rosijanka [135]
15 = 0.23x
x = 65.2 

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4 0
3 years ago
Which values of P and Q result in an equation with no solutions?
Ad libitum [116K]

Try this solution/explanation:

<u>way 1</u>:

rule: for an equation where no roots P+Q=0. It means, Px-Qx=0, ⇔ x(P-Q)=0, ⇔ P=Q.

for answer 'D' P=Q=15.

<u>way 2</u>:

rule: if an equation of the line has a form y=kx+b, then y₁||y₂ if k₁=k₂. It means, for y₁=Px-45 || y₂=Qx+75, then P=Q. P=Q, if 'D' answer.

Answer: D

3 0
3 years ago
Four tenths plus four ninths
olga2289 [7]

Answer:

38/45

Step-by-step explanation:

4/10+4/9 Simplify.

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2/5*9/9=18/45

4/9*5/5=20/45

18/45+20/45=38/45

Hope this helps and have a great day C:

8 0
2 years ago
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