Answer:
4
Step-by-step explanation:
im assuming x is the top side of the trapezium because there is no picture provided.
the formula for area of trapezium is:
height x (base + (difference of the base and the topside/2))
so we would do the inverse of this:
22/4 = 5.5
7-5.5 = 1.5
1.5x2 = 3
7-3 = 4
x = 4
Answer:
Plot showing the two variables (income Vs revenue) is attached
(B)
r = 0.423, weak positive correlation.
(C)
df = n-2 = 25-2 = 23
α = 0.05
one-tailed critical value T = 1.319
Test statistic T = r*Sqrt[(n-2)/(1-r²)] = 0.423*Sqrt[(25-2)/(1-0.423²)] = 2.24
Conclusion: Since 2.24 > 1.319 we conclude that there is a positive relationship between the variables.
(D)
r² = 0.423² = 0.179, so approximately 18% of the variation in revenue is explained by the variation in the number of rooms occupied.
0,1,2,4,4,5,5,24.....median is 4...I believe it is this one
Answer:
-10
Step-by-step explanation:
First, you know n=3, so you plug that in. Then that equals A(n) = 3/2(-2)3-1, which can be simplified into 3/2*-6-1, then -9-1, and finally -10. [I did the 3/2*-6 by first: multiply -6*3=-18, then -18/2=-9.]
Hope this helps!