30(8.75) +11x = 400 X=12.5
Given:
Consider the below figure attached with this question.
To find:
The solution to this linear system.
Solution:
From the below graph it is clear that both lines intersect each other at point (2,3).
Here,
x-coordinate = 2
y-coordinate = 3
Therefore, the solution to the given system is (2,3).
Hence, the required answer for first blank is 2 and for second blank is 3.
Step-by-step explanation:
The 2 lines are parallel to each other which means that angle #5 and 93° are alternate interior angles so by definition, they are equal. Hence angle 5 = 93°
Answer:
Sales are expected to increase positively.
Step-by-step explanation:
The model is y =7-3*X1+5*X2
Here, y is the depended variable and X1 and X2 are independent variable.
Holding the unit price constant X2 (television advertisement) is increase by $1 dollar
SSR= 3500
SSE=1500
So, TSS = SSR+SSE = (3500+1500) = 5000
Now r^2= 1 - (SSR/TSS) = 1 - (3,500/5,000) = 1 - 0.70 = 0.30
So, the sample correlation coefficient (r) = (0.3)^(1/2) = 0.547
We can conclude that sample correlation indicates a strong positive relationship.