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ella [17]
2 years ago
15

What’s the radius of the circle

Mathematics
1 answer:
topjm [15]2 years ago
6 0

Answer:

radius=2

Step-by-step explanation:

if the circumference=4pi and the formula is 2pir then r must be 2 and would look like this:

C = 2pir

C = 2pi2

C = 2*2pi

C = 4pi

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3 years ago
3,<br> Which expression is equivalent to<br> 56x7y5, if x #0 and y# 0?
spin [16.1K]

Answer:

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Step-by-step explanation:

1960

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6 0
1 year ago
what is the solution to this system of equations (Use the elimination method by multiplying the first equation by 3.) 2x+y=20 6x
user100 [1]

Answer:

(7, 6)

Step-by-step explanation:

multiply first eq. by 3 to get 6x - 3y = 60

now do

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solve for y: y = 6

with this y value, plug it in to the first equation (easier to solve) and get 2x + 6 = 20

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5 0
2 years ago
HELP When does expanding and simplifying a(b + c) result in a positive value for ac?
Reil [10]

Answer:

When c and a are positive or both are negative

Step-by-step explanation:

negative times negative equals positive so if a was negative and c was negative -a*-c= ac

Of course positive times positive equals negative so if a and c were positive we could do

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Hope I could help !

7 0
2 years ago
Log2cos(x)<br><br> How do I find the derivative of the following question
I am Lyosha [343]
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