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igomit [66]
3 years ago
9

Lexus skateboards from his house to school 4 miles away. It takes him 20 minutes.

Mathematics
2 answers:
Iteru [2.4K]3 years ago
7 0

I used the equation y=4x+20.

RoseWind [281]3 years ago
6 0

Answer:

\displaystyle m = \frac{1}{5}\cdot t

Step-by-step explanation:

<u>Proportional Model</u>

The number of miles m that Lexus can skateboard in t minutes can be modeled by:

m = kt

It's given that Lexus skateboard from his house to school for a distance of m=4 miles in t=20 minutes.

Substituting:

4 = k.20

Dividing by 20

k=\frac{4}{20}

Simplifying:

k=\frac{1}{5}

This produces the model

\displaystyle m = \frac{1}{5}\cdot t

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Emma buys and sells truck parts. She bought two tires for $35.00 each and later sold them for $65.00 each. She bought three rims
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Answer:

two tires for $35 -------------------------$70  total

three rims for $75---------------------------   $225

five headlights for $ 4.00  ----------------$20

Emma spends ($225+$70+$20) =$315

Now Emma sells them for 2 tires for $65 =130

3 rims for $136         =   $408

5 headlights for $15  = $75

total money Emma makes = $613.

the profit is $613- $315= $298

the profit is $298


7 0
3 years ago
The sampling method used to examine a population when the auditor wants to estimate a continuous amount (or value) of the popula
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The sampling method used to examine a population when the auditor wants to estimate a continuous amount (or value) of the population is variable sampling.

Sampling is a process used in statistical analysis in which a predetermined number of observations are taken from a larger population. The methodology used to sample from a larger population depends on the type of analysis being performed, but it may include simple random sampling or systematic sampling.

Variables sampling is the process used to predict the value of a specific variable within a population

Here, the auditor want to estimate a continuous amount (or value) of the population. So the suitable sampling method is variable sampling

Hence, The sampling method used to examine a population when the auditor wants to estimate a continuous amount (or value) of the population is variable sampling.

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Step-by-step explanation:

factor of 10x + 40y

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