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3 years ago

A circle's ___ is twice as long ad it's radius

Mathematics

2 answers:

Sloan [31]3 years ago

6 0

It is the Diameter! :)

chubhunter [2.5K]3 years ago

5 0

A circles DIAMETER is twice as long as its radius

Hope this helps you :)

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Given that y is directly proportional to x^2 and that y=2 when x=3 find the value of y when x=6

Sergio039 [100]

Answer:y=4/3

y is directly proportional to x^2 is written as

$y \alpha {x}^{2}$ introducing a constant,

y=kx^2

but from the question, when y=2 , x=3 . putting it in the formula to get the value of k

$2 = {3}^{2} \times k$

2=9k . dividing through by 9 to get the value of k

 $\frac{2}{9} = \frac{9k}{9}$ 

 $k = \frac{2}{9}$ 

putting it in the general expression

 $y = \frac{2}{9} x$ 

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 $y = \frac{2}{9} \times 6$ 

 $y = \frac{4}{3}$ 

therefore the value of y when x=6 is

4/3

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Write down the nth term of this sequence... 8, 11, 14, 17, 20

bezimeni [28]

Seems to be an arythmetic sequence
common difference is 3 (increases by 3 each time)

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3 years ago