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GalinKa [24]
3 years ago
5

The table represents the distance covered by Emma over several hours on a recent Saturday bike ride. Becky takes the same route,

and the total distance she travels, y miles, in x hours is represented by the function y = 8x. Assuming that Emma and Becky travel at a constant rate of speed, which statement BEST compares their biking speeds?
A) Emma travels 0.5 miles per hour faster than Becky.
B) Becky travels 0.5 miles per hour faster than Emma.
C) Emma travels 7 miles per hour faster than Becky.
D) Emma and Becky travel at the same speed.

Mathematics
2 answers:
exis [7]3 years ago
8 0

Answer:

Option B. is the answer.

Step-by-step explanation:

y = 8x is the function that represents the distance y miles traveled in x hours by Emma.

From the given function

Speed of Emma = \frac{y}{x}=8 miles per hour

Relation between distance covered (y) by Becky in (x) hours has been given in the table attached.

Then speed of Becky = Rate of change in distance traveled by Becky

Speed of Becky = \frac{(15-7.5)}{(2-1)}

                           = 7.5 miles per hour

Difference in the speed of Becky and Emma = 8 - 7.5 = 0.5 miles per hour

That represents that Becky travels 0.5 miles per hour faster than Emma.

Option B). is the answer.

aleksandrvk [35]3 years ago
3 0

Answer:

B

Step-by-step explanation:

Becky travels 0.5 miles per hour faster than Emma.

Emma's speed is 7.5 miles per hour. The slope of y = 8x, which is 8, is Becky's speed.

8 − 7.5 = 0.5 miles per hour faster

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Sam and Bruno were computing how many kilometers they rode in the 3 bike trips they took last month. In order, they rode 45.7, 4
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Answer:

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In order to convert number of miles into kilometers, we need to divide each number of mile by 0.621 miles.

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Step-by-step explanation:

Hopefully this helped, if not HMU and I will get u a better answer.

<em>-Have a great day! :)</em>

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3 years ago
A radioactive substance decays exponentially. A scientist begins with 100 milligrams of a radioactive substance. After 27 hours,
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7 0
3 years ago
50 POINTS!!!!!
Makovka662 [10]

We can adjust the data by adding 4 to everything before we calculate the statistics.  Or we can calculate the statistics on the given data and just add 4 to everything at the end.  We'll get the same answer either way.

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In the second week we add four to everything.  Since that adds four to the min and max, the range doesn't change.

Answer: mean=10.9, median=11, mode=9, range=5

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