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Sholpan [36]
3 years ago
15

Jesse finished the first race in two minutes and seven seconds. Tim finished 12 seconds faster than Jesse. Juan finish eight sec

onds faster then Tim. How long did it take Juan to finish.
Mathematics
1 answer:
Alex777 [14]3 years ago
6 0

Answer: Juan finished the race with 2 mins and 11 seconds

Step-by-step explanation:

2:07 + 12 = 2:19

2:19 - 8 = 2:11

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Step-by-step explanation:

1.901

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Barry's walkie-talkie has a range of 2 mi. Barry is traveling on a straight highway and is at mile marker 207.Write and solve an
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Let x be the mile marker that Barry's walkie talkie will reach, then

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Question Progress
solong [7]

Answer: 54

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3 years ago
What is the average rate of change of the function over the interval x = 0 to x = 6? f(x) = (2x - 1) / (3x + 5)
Sedaia [141]

Answer:

The average rate of change of the function over the interval x = 0 to x = 6 is \frac{34}{195}.

Step-by-step explanation:

Geometrically speaking, the average rate of change (r) of the function over a given interval is determined by equation of secant line, that is:

r = \frac{f(b)-f(a)}{b-a} (1)

Where:

a, b - Lower and upper bounds.

f(a), f(b) - Function evaluated at lower and upper bounds.

If we know that f(x) = \frac{2\cdot x -1 }{3\cdot x + 5}, a = 0 and b = 6, then the average rate of change of the function over the interval is:

f(a) = \frac{2\cdot (0)-1}{3\cdot (0) +5}

f(a) = -\frac{1}{5}

f(b) = \frac{2\cdot (6)-1}{3\cdot (6)+5}

f(b) = \frac{11}{13}

r = \frac{\frac{11}{13}-\left(-\frac{1}{5} \right) }{6-0}

r = \frac{34}{195}

The average rate of change of the function over the interval x = 0 to x = 6 is \frac{34}{195}.

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3 years ago
A car travels at an average speed of 48 miles per hour. How long does it take to travel 180 miles?
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Answer:

3 hours and 45 minutes

Step-by-step explanation:

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