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Wittaler [7]
3 years ago
8

Toni is a plumber she charges 30$ to come to a house and 20 $ for every hour she works write an equation to model the situation

Mathematics
2 answers:
gregori [183]3 years ago
7 0

Answer:

y=20x+30

Step-by-step explanation:

30 is the cost she charges to come to the house, 20 is the amount she charges for every hour she is there

S_A_V [24]3 years ago
4 0

Step-by-step explanation:

the answer is y=20x+30

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A cylinder closed tin of radius r cm is made from 600cm2 tin sheet of metal.
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Answer:

Note:  The expression "h =300- pi r /pi r" would equate to 299, as written.  I find h = (300 - πr^{2} )/πr to be the equation for height.

Step-by-step explanation:

The total surface area of a sylinder is 2πr(h+r) where h is the height and r is the radius.  That consists of top and bottom disks, each with an area of πr^{2}, for a total of 2πr^{2}.  The side is a  continous sheet that has an area of 2πrh, where h is the height.  2πr is the circumference of the can, so the surface area of the side is 2πrh.

The total surace area of a closed cylinder is therefore 2πr^{2} + 2πrh.

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h = (300 - πr^{2} )/πr

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3 years ago
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