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fredd [130]
3 years ago
10

if the wheel of the engine of a train is 30/7m in circumference and makes 7 revolutions in 4 secs then the speed of the train is

?
Mathematics
1 answer:
Nastasia [14]3 years ago
6 0
I dont know ans dont care but  iill try its 2 and lima bean
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Mandarinka [93]

Answer:

Step-by-step explanation:

Area of rectangle = length * width

                             = (x + 4) (5x)

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                            = 5x² + 20x

Perimeter of rectangle = 2*(length + width)

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                                     = 2*(6x + 4)

                                   = 2*6x + 2 *4

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Sonja [21]

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43+2(3-2)=43+2*3-2*2=43+6-4=45

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.What is the value of the expression below when x=9? Enter the answer as NUMBER only?<br> 1/3 x^2+4
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Step-by-step explanation:

<u>1</u><u> </u>*9^2 + 4

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<u>1</u><u> </u>* 81 + 4

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<u>85</u>

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=28

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