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jonny [76]
2 years ago
8

felix is a car mechanic. he can fix 2 motorcycles and 3 cars in 170 minutes. he can fix 1 motorcycle and 5 cars in 225 minutes.

write a systems of equations to represent the number of minutes to fix a motor cycle, x, and the number of minutes to fix a car, y.
Mathematics
1 answer:
vekshin12 years ago
4 0

Answer:

2x+3y=170.......1

1x+5y=225.......2

multiplying equation 2 by 2 and subtracting eq.1 &2

2x+3y-2x-10x=170-225

-7x=-55

x=55/7

55/7+5y=225

5y=225-55/7

y=1520/(7×5)=304/7

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yawa3891 [41]

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Step-by-step explanation:

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thus area of base of cone is calculated below

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area of base of cone is 314.2857 square cm

height = 30 cm

Thus volume of cone  = 1/3* (area of base*height)

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Thus, volume of cone is 3142.857 cubic cm.

volume of cone  to the nearest hundredth is 3142.86 cubic cm

6 0
3 years ago
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