Find the probability a random voltage is between 124.1 volts and 124.7 volts.
1 answer:
Answer:
C. 0.30
The probability is 0.30
Step-by-step explanation:
The diagram used in solving this question is attached.
From the given graph that is attached: the needed region have
height = 0.5
width = 124.7 - 124.1 = 0.6
The area of the rectangular region is:
Therefore, the probability of a random voltage between 124.1 and 124.7 is 0.3
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Answer:
<em>B</em>
Step-by-step explanation:
<u>Dilations</u>
Given a point A(x,y) and a scale factor k the dilated image of A, called A' is calculated as A'=(kx,ky), assuming the same scale factor is applied in both axes.
The pentagon ABCDE was dilated to create pentagon A'B'C'D'E'. To find the dilaton rule used, we must find two clear points where the coordinates of both axes can be easily read from the graph.
Point C(-2,0) maps to C'(-5,0). This gives us the scale factor for the x-axis of -5/(-2)= 5/2.
The y-coordinate of E is 2 and the y-coordinate of E' is 5. This gives us the same scale factor for the y-axis of 5/2.
Thus, the rule to dilate the pentagon is:
B