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2 years ago

At 9am you have run 2 miles. At 9:24 you have run 5 miles. What is your running rate in minutes per mile?

Mathematics

1 answer:

Drupady [299]2 years ago

3 0

Answer:

8minutes per mile

Step-by-step explanation:

You ran 3 miles since 9am divide 24 by 3 to get 8 minutes

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A distribution for a set of wrist circumferences (measured in centimeters) taken from the right wrist of a random sample of newb

lozanna [386]

Answer:

A Histogram will be used to represent the size of right wrist of the random sample of newborn infants.

Step-by-step explanation:

A histogram is the graphical representation of the frequency distribution in the given sample. As the value of circumference can be a positive real number, therefore a Histogram with class boundaries can be formed such that the overall frequency of a wrist size is also visible in the graph.

Also as the distribution will be of continuous nature thus a histogram is a more suitable option as compared to a bar or stem and leaf graph.

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2 years ago

Which statements describe an object in motion that has no external force acting on it? Check all that apply.

Step2247 [10]

Answer: it moves at a constant speed and stays in the same direction

Step-by-step explanation:

It does this because there is no friction or nothing pushing on it therefore there is nothing to slow it down or speed it up

5 0

2 years ago

Read 2 more answers

Simplify: StartRoot 64 r Superscript 8 Baseline EndRoot

patriot [66]

Answer:

8r^4

Step-by-step explanation:

$\sqrt{64r^8} =\sqrt{(8r^4)^2}=\boxed{8r^4}$

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2 years ago

the store employee works 35 hours per week,which inequality can be used to find the dollar value x, of weekly sales that the emp

Zigmanuir [339]

35x > 400 <== ur inequality
x > 400/35
x > 11.428 rounds to 11.43

7 0

2 years ago

Read 2 more answers

Consider the following: A medical researcher wants to determine the effects of pH (a measure of alkalinity or acidity, with pure

natita [175]

Answer:

See below

Step-by-step explanation:

<h3>Continuation of the question</h3>

Data in the table:

PH 4 5 6 7 8 9 10 11

Bacteria 116 120 131 136 141 151 148 163

Create a scatter plot to represent the data: Based on the data and your scatter plot, what do you think a good linear function would be to represent the data?

<h3>Solution</h3>

See attached for scatter plot

We can see the chart is close to linear function. Let's build one based on data in the table

The line will be in the form of:

y = mx + b

If we use two points and get the equation

(4, 116) and (8, 141)

Finding the slope:

m = (141-116)/(8-4) = 25/4 = 6.25

Then, finding y-intercept:

116 = 6.25*4 + b
b = 116 - 25 = 91

So the line is:

y = 6.25x + 91

Note: This is approximate best fit graph and it is attached as well. Exact formula for the line is built by using different method and is very close to the one above

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2 years ago