Answer:
x=9.2
Step-by-step explanation:
23/x=17.5/7
cross multiply
17.5x=161
divide
x=9.2
Answer:
A
D
Step-by-step explanation:
because first street intersect 2 and 3
...
and second street is parallel to third street
The standard deviation for the cost of mobile cell phones is 10.925.
Given
Mobile cell phone cost Number of students
10-19.99 7
20-29.99 20
30-39.99 28
40-49.99 12
50-59.99 7
We have to calculate the standard deviation of the given data.
Standard deviation is a measure which measures the variation in te values of data sets.
We know that the formula of calculating standard deviation is as under:
Standard deviation=
/
Mean=33.91392 (calculated in figure)
∑f
=8713.514 (calculated in image)
∑f-1=74-1=73
We have to now just put the values and find the value of standard deviation.
Standard deviation=
=
=10.925
Hence the standard deviation of mobile cost is 10.925.
Learn more about standard deviation at brainly.com/question/475676
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Answer:
x is greater than or equal to 3
Step-by-step explanation:
x ≥ 3
x is greater than or equal to 3
so you got the plot right
Im not sure, good luck finding