PLS HELP ME IMA GIBE BRAINLIST AND A LIKE
1 answer:
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Answer:
Step-by-step explanation:
Graphing systems of linear inequalities is as follows:
Step 1:
Firstly sketch first line which is in this case f(x) = x +1 which means we sketch
y = x + 1
Step 2:
Secondly we sketch the second line which is f(x) = 2 which means we sketch
y = 2
Step 3:
Thirdly we sketch the third line which is f(x) = x which means we sketch
y = x
Now since we have sketched all the three lines we see the inequalities in the first equation it says if x < 0 it means for all values of x which are less than zero meaning all the negative values meaning the graph will not exist for values of x = 0 or higher so we omit that region.
Now we for the second line it says 0 ≤ x ≤ 1 meaning the second line exists for the values of x between zero and one and the rest we omit.
Now for the third line it says x > 1 meaning the third line exists for all values of x greater than 1 meaning we omit everything else.
The rest i have attached some images on to graph the functions do take a look because typing all that would take ages so its better if you visualize it might help you understand it better.
Answer:
the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour
Step-by-step explanation:
The computation of the standard deviation of the speeds of cars is shown below;
The z score for the top 1% is 2.326
So,
= (75 - 61) ÷ standard deviation = 2.326
Standard deviation is
= 14 ÷ 2.326
= 6.0 miles per hour
Hence, the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour
