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Kamila [148]
3 years ago
5

If y varies directly with X and y =10 and X=4 write the direct linear variation equation .

Mathematics
1 answer:
rosijanka [135]3 years ago
7 0
Y= kx   (k being a constant)
10= k × 4     k=5/2

y= 5x/2    The answer is C.
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Lauren is a college sophomore majoring in business. This semester Lauren is taking courses in accounting, economics, management
Alexxandr [17]

Answer:

a) We can calculate the mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X= \frac{350+ 70+ 65 +50+ 60}{5} =119

And for the median first we need to order the dataset on increasing way:

50, 60, 65, 70, 350

Since the sample size is an odd number we can calculate the median as the middle position for the dataset, for this case the 3th position and we got:

Median = 65

b) For this case we can see that we have an outlier present in the data 350, and for this case if we want to give a measure of central tendency is better use the median since this meaure is not affected by outliers. So Lauren should use the median.

Step-by-step explanation:

For this case we have the following data:

350, 70, 65, 50, 60

Part a

We can calculate the mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X= \frac{350+ 70+ 65 +50+ 60}{5} =119

And for the median first we need to order the dataset on increasing way:

50, 60, 65, 70, 350

Since the sample size is an odd number we can calculate the median as the middle position for the dataset, for this case the 3th position and we got:

Median = 65

Part b

For this case we can see that we have an outlier present in the data 350, and for this case if we want to give a measure of central tendency is better use the median since this meaure is not affected by outliers. So Lauren should use the median.

8 0
3 years ago
Given: -7x<-21 choose the solution set
Ahat [919]

Answer:

x > 3

Step-by-step explanation:

The only thing you need to do is just divide both sides by -7

-7x/-7<-21/-7

x>3

I hope this helped!! Good luck (:

6 0
2 years ago
Can you please help me
goldenfox [79]

Answer:

nah

Step-by-step explanation:

b

7 0
3 years ago
If f(x) = 4x + 12 is graphed on a coordinate plane, what is the y-intercept of the graph
Lelechka [254]
The answer is 12 because the linear equation is mx+b,where m is the slope and b is the y-intercept.
7 0
3 years ago
Use properties of operations to write two equivalent expressions for 13(4 + x).
lesantik [10]

Answer:

13(4+x)

=52+13x

Step-by-step explanation:

13 multiplies the 4 and x.

then 13 multiply 4 is 52 while 13 multiply x 13x.

6 0
2 years ago
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