Plug in the given coordinates:
Since they are asking to round to the nearest tenth it is assumed that they would like a decimal answer.
distance formula works like this
(difference in xs)² = difference of 8 and 3 is 5² = 25
(difference in ys)² = difference of 2 and 8 is 6² = 36
add them = 61
square root of that = √61 = 7.8
Given two points P(8,2) and Q(3,8). To find the distance between the two point can be gotten by using the formula for calculating the distance between two points on a line. The formula for calculating the distance between two points is given as;
Where P(x1,y1) = (8,2)
Q(x2,y2) = (3,8)
From the points given, x1=8, y1=2, x2= 3, y2=8
substituting the values into the given formula, we will have;
Q-P = √(3-8)²+(8-2)²
Q-P = √(-5)²+6²
Q-P = √25+36
Q-P = √61
Q-P = 7.81
Q-P = 7.8(to the nearest tenth)
C) 4.88 hr; D) convenience; B) P(A and B); A) 72; B) mean = 27.5, range = 20; no function shown to answer the question; A) 6.58, 0.42; D) average class size, cost; D) 7.8
#1) To find the mean, we add all of the numbers and divide by the number of data values:
(1.7+7.7+8.3+1.6+5.1)/5 = 24.4/5 = 1.88
#2) This is a convenience sample because it was easy for the analyst to do; she did not use random sampling or any sort of groups, and she did not choose every kth item.
#3) The probability of two events is P(A and B) by definition.
#4) To find the total number of choices, we multiply the number of flavors by the number of toppings:
6(12) = 72
#5) To find the mean, add all of the data values up and divide by the number of data values:
(26+19+23+39+31+34+23+25)/8 = 220/8 = 27.5
To find the range, subtract the highest and lowest values:
39-19 = 20
#6) There is no function given to answer the question.
#7) Using the quadratic formula,
#8) The independent quantity is the one that causes the dependent to change. In this case, the average class size causes the cost of books to change; this means the average class size is independent and the cost of books is dependent.
#9) Using the distance formula,
The answer is D your are welcome :)