Please help me thanks
1 answer:
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<u>Answer:</u>
○
<u>Step-by-step explanation:</u>
Given the equation:
,
to solve for , we have to rearrange the equation to make
its subject.
⇒ [expand brackets]
⇒
⇒ [add
to both sides]
⇒
⇒ [subtract 96 from both sides]
⇒
⇒ [divide both sides by 20]
⇒
Answer: Last Option
Step-by-step explanation:
In this case we have a uniform probability. In the graph the horizontal axis represents the possible values of the variable x and the vertical axis represents the probability P(x).
To calculate the probability that x is between 4.71 and 7.4 we calculate the area under the curve.
The horizontal length between 4.71 and 7.4 is:
.
Then notice that the vertical length in this interval is 0.125.
Then the area of a rectangle is:
Where l is the length and w is the width.
In this case we have to:
So