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3 years ago

Samuel has run for 45 minutes. If he has completed 60% of his run, how many minutes will Samuel run in all?

Mathematics

1 answer:

Irina18 [472]3 years ago

6 0

Answer:

Step-by-step explanation:

45÷10= 4.5

4.5×6= 27 minutes

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Answer Question QUICKILY please

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In this case, the formula would be: $\frac{4x + 2x}{2} = \frac{6x}{2} = 3x$

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3 years ago

A ball is kicked 4 feet above the ground with an initial vertical velocity of 51 feet per second. The function h(t)=−16t²+51t+4

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0.6 seconds to 2.6 seconds

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2 years ago

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A painter charges an initial fee of $50 and $30 for each hour of labor. Write a linear function to determine the total cost. How

il63 [147K]

The initial fee of $50 is essentially the y intercept because this is the value when x = 0 (x is the number of labor-hours). So b = 50.

The slope is m = 30 because each increase of 1 hour leads to the cost bumping up by 30 dollars. In other words, slope = rise/run = (change in cost)/(change in hours) = 30/1

So we plug m = 30 and b = 50 into the y = mx+b formula to get y = 30x+50

Replace y with f(x) to get f(x) = 30x+50

The linear function for the cost is f(x) = 30x+50

Note: Some books may use other letters (instead of x and f(x)), but the idea is still the same

Once you know the cost function, you replace x with 4.5 to find the amount it will cost to have a painter work for 4.5 hours.

f(x) = 30x+50
f(4.5) = 30*4.5+50
f(4.5) = 135+50
f(4.5) = 185

It will cost 185 dollars to have the painter work for 4.5 hours

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3 years ago