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tensa zangetsu [6.8K]

3 years ago

5

A European car manufacturer reports that the fuel efficiency o f the new MicroCar is 28.5 km/L highway and 22.0 km/L city. What

are the equivalent fuel efficiency rates in miles per gal?

1 answer:

aleksandrvk [35]3 years ago

6 0

17.71 m/L highway and 13.67 m/L city.

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if the rate of change for one linear function is positive and for another is negative can they both be either increasing or decr

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They can never be both either increasing or decreasing.

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3 years ago

Which equation can be used to solve for the rate, r, for Sam to change all the light bulbs in the office building by himself?

Bad White [126]

Answer:

$\frac{3}{r}+\frac{3}{8}=1$

Step-by-step explanation:

Given question is incomplete; here is the complete question.

Working together, Sam and Charlie can change all light bulbs in the office building in 3 hours. It would have taken Charlie 8 hours to do the job alone. Which equation can be be used to solve for the rate 'r', for Sam to change all the light bulbs in the office building by himself.

Let Sam can change the bulbs in the office alone in 'r' hours

Per hour work done by Sam alone = $\frac{1}{r}$

Let Sam takes he time to change the same bulbs in the office alone = 8 hours

Per hour work done by Sam = $\frac{1}{8}$

Since, Sam and Charlie complete the work together in time = 3 hours

Therefore, per hour work done by both = $\frac{1}{3}$

Equation for per work done by both will be,

Per hour work done by both = Per hour work done by Sam alone + Per hour work done by Charlie

$\frac{1}{r}+\frac{1}{8}=\frac{1}{3}$

Therefore, equation for the rate 'r' will be,

$\frac{1}{r}+\frac{1}{8}=\frac{1}{3}$

$\frac{3}{r}+\frac{3}{8}=1$

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*HELP PLEASE ASAP*

ivolga24 [154]

The is 5.6 as the answer

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2 years ago