Answer:
a segment cd only
Step-by-step explanation:
segment cd is the only line that passes through segment ab at a right angle
Answer:
3.5cm
Step-by-step explanation:
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Answer: D(3) = 4 miles according to the graph.
Step-by-step explanation:
Look for the 3 on the time scale at the bottom of the graph. Follow the grid line straight up to where it meets the graphed line. Follow the grid line to the distance scale at the left to find the value at that point. It is 4 miles.
Let's calculate the z scores for 42 and 58:
42 - 50
z = ------------- = -1
8
58-50
z = --------------- = 1
8
so the question becomes: what percent of the data should fall within 1 std. dev. of the mean? Referring to the empirical formula: 68% (answer)
1 .05
1 will be put in the ones places where the 5 will be put in the hundredths place.