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3 years ago

The radius of a circle is 3 5/12 inches What is the diameter of the circle?

Mathematics

2 answers:

nirvana33 [79]3 years ago

8 0

Answer:

6 5/6

Step-by-step explanation:

diameter is radius multiplied by 2

* means multiplied by

3 5/12 = 41/12

41/12 * 2 = 82/12 = 6 5/6

baherus [9]3 years ago

3 0

Answer: 6 5/12

Step-by-step explanation: i just took the k12 test and this is the corret answer

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Leona [35]

R=rate of boat in still water
c=rate of current
d=rt
since you're given that the time it takes to travel the same distance downstream and upstream, your equation will be d_1=d_2, or rt=rt
the rate upstream is r-c and the rate downstream is r+c (because the boat's and river's rates add up)
since you know t_1 and t_1 are 5 and 3, you can now set up 2 equations
<u>5*(r-c)=45</u> because (time upstream)*(rate upstream)=distance=45 miles
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<u>3*(r+c)=45</u>
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If you have any questions please ask

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3 years ago

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3 years ago

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AVprozaik [17]

I think you Need to subtract or multiply them all or added them all

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3 years ago

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Lingjin drove from los angeles to ventura during rush hour at an average speed of 4545 miles per hour, and then drove back the s

Softa [21]

45mph times x hours one way
30mph times y hours back
x+y=3 hours 15 minutes

45mph(x)=z miles
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so
$45x = 30y \\ x = \frac{30}{45} y \\ x = \frac{2}{3} y$
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$x + y = 3.25 \\ \frac{2}{3} y + y = 3.25 \\ \frac{5}{3} y = \frac{13}{4} \\ y = \frac{13}{4} ( \frac{3}{5} ) \\ y = \frac{39}{20}$
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3 years ago