Answer:
Area of the sandbox cover = 12 ft²
Step-by-step explanation:
The area of a kite is given as the product of the two diagonals of the kite divided by 2.
Area of kite = (xy/2)
where x and y are the diagonals of the kite.
The sandbox cover, in shape of a kite has a width of 6 ft and a height of 4 ft.
These two dimensions are the diagonals of the kite. Hence, the area of a kite is
A = (6×4/2) = 12 ft²
Hope this Helps!!!
Jean-Paul's error is that he should have written the second equation as h = 4 p + 2.
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<h3>How to solve an equation?</h3>
The hardcover book is $8 each and paperbacks for $4 each.
The number of hardcover books, h, sold one day was 2 more than four times the number of paperback books, p, sold that same day.
Therefore,
h = 4p + 2
Hence,
8h + 4p = 160
Therefore, the right equation are as follows:
h = 4p + 2
8h + 4p = 160
Hence, Jean-Paul should have written the second equation as h = 4 p + 2.
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Answer: It is proportional because 195/3 equals 65 and 325/5 equals 65 as well, so it is proportional.
Hope this helps! :)
Answer:
a) strong negative linear correlation.
b) Weak or no linear correlation.
c) strong positive linear correlation.
Step-by-step explanation:
The correlation coefficient r measures the strength and direction (positive or negative) of two variables. The correlation coefficient r is always between -1 and 1. When the coefficient r is negative then the direction of the correlation is downhill (negative) and when it's positive then it's an uphill correlation (positive). Similarly, as the coefficient is closer to -1 or 1 the correlation is stronger, with zero being a non linear relationship.
Now back to the question:
a) Near -1: as we said before, this means an strong negative (-1) linear correlation.
b) Near 0: weak or no linear correlation (we cannot say if its positive or negative because we don't know it it's near zero from the right (positive numbers) or the left (negative numbers)
c) Near 1: strong positive (close to +1) linear correlation
Answer:
90
Step-by-step explanation:
Basically 90 precent of 100 is 90
