a tree casts a shadow that is 18 feet in length. If the angle of elevation is 28 degrees, which of the following best represents
the height of the tree?
1 answer:
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Answer:
The width of the carpet is 12 inches and the length of the carpet is 120 inches.
Step-by-step explanation:
^We can distribute first^
Distributing would result in:
Then we would combine like terms, which would result in:
Then we solve the equation.
Since the width of the carpet is 12 (as we figured out). The statement said that "The length of the carpet is 108 inches more than the width."
So now we add 108 to 12 to figure out the length.
The length of the carpet is 120 inches.
Answer:
Mean of resulting data = 7 times mean of original data=7a
Step-by-step explanation:
Given that all values in a data set are multiplied by 7. to find the mean of the new set.
Let {x1,x2....xn} be the original data set.
The mean of this data set a=
Now multiply all values by 7
New data set
= {7x1, 7x2...7xn}
Sum of these = 7(x1+x2+..+xn) = 7 times sum of original data set
No of element = n for both the sets
Hence new mean = 7 * mean of original set.=7a
in other words, if the mean of the values in a data set is a. If each of the values in the data set were multiplied by 7, new mean would be 7a.