Answer: True
Explanation: Parallel lines are two lines that lie on the same plane and they never intersect.
Answer:
For the <u>first question</u>: They must each have a different mean and a different standard deviation. For the <u>second question</u>: In an observational study the researchers do not control treatment and in an experiment they do. For the <u>third question</u>: The second graph. For the <u>fourth question</u>: The second graph.
Step-by-step explanation:
For the <u>first question</u>: We can see that each bell-shaped curve is centered around a different number. This tells us that their means are all different.
We can also see that each curve has a different width; this means that the spread of data, measured in part by the standard deviation, is different as well. This means both the mean and the standard deviation of each distribution is different.
For the <u>second question</u>: In an observational study, as the name implies, all that is done is observation. There is no treatment given by the researchers. In an experiment, however, one group receives treatment and one group does not, so the differences can be measured.
For the <u>third question</u>: In the first graph, the probabilities add up to 1.2. This is more than 100%, so this is not a valid distribution. In the second graph, the probabilities add up to 1.0; this is 100% exactly, so this is a valid distribution.
For the <u>fourth question</u>: In the first graph, the probabilities only add up to 0.9. This is not 100%, so this is not a valid distribution. In the second graph, the probabilities add up to 1.0; this is 100% exactly, so this is a valid distribution.
SA=2(lw+wh+lh) This is the formula for finding the surface area of a rectangular prism, where SA is surface area, l is length, w is width, and h is height.
208=2(lw+wh+lh)
104=lw+wh+lh Here, I divided both sides by 2 to get ride of the 2.
Now, I used prime factorization to find out all the prime factors of 104, which are 2, 2, 2, and 13. Since rectangular prisms only have 3 dimensions, I needed to combine two of the prime factors. In this case, I can either combine 2 of the 2s to get 2, 4, and 13 or I can combine 13 with one of the 2s to get 26, 2, and 2.
If my dimensions were 2, 4, and 13...
my surface area would be 172 sq cm.
If my dimensions were 2, 2, and 26...
my surface area would be 208 sq cm.
Hence, the width of the rectangular prism when the surface area is 208 square centimeters can be either 2 or 26.
Answer:
ellipse
shape with two edges, one straight and one curved
Step-by-step explanation:
