Answer:
Q1 = 61
Q3 = 63
Step-by-step explanation:
From the plot attached :
Data obtained is :
Temperature frequency
59 0
60 2
61 3
62 3
63 4
64 2
65 1
Frequency Total 15
Data in raw format :
60,60,61,61,61,62,62,62,63,63,63,63,64,64,65
The first quartile :
Q1 = 1/4(n+1)th term
n = 15
Q1 = 1/4(15+1)th term
Q1 = 1/4 * 16th
Q1 = 4th term
Q1 = 61
Third quartile (Q3):
Q3 = 3/4(n+1)th term
n = 15
Q3 = 3/4(15+1)th term
Q3 = 3/4 * 16th
Q3 = (48/4)th term
Q3 = 12th term
Q3 = 63
Sqrt(27)+sqrt(48)+sqrt(12)
Sqrt(27)=sqrt(3*3*3)=3*sqrt(3)
Sqrt(48)=sqrt(4*4*3)=4*sqrt(3)
Sqrt(12)=sqrt(2*2*3)=2*sqrt(3)
Add the three to get 9*sqrt(3)
Final answer:
9*sqrt(3)
Hope I helped :)
Answer:
36 White cars
Step-by-step explanation:
total of 40 white cars and yellow cars" means 40 = W + Y
"9 times as many white cars as yellow cars" means 9Y = W
9W + 9Y = 360 (first equation; multiply (W+Y=40) by 9 to eliminate Y)
W - 9Y = 0 (carefully revise the second equation)
------------------- (Elimination method: add the equations)
10W = 360
W = 36 Ans: 36 White cars
Checking (very important):
40 = W + Y
40 = 36 + Y
4 = Y
is 9(4) = 36
36 = 36
The y-intercept in the equation in the form y = mx + b is b.
To find the y-intercept in x - y = -1, isolate y on the left-hand side:
x - y = -1
-y = -x - 1
y = x + 1
b in this equation is 1, so the y-intercept is 1.
Hope this helps.