Answer:
98% Confidencce Interval is ( 3030.6, 7467.4 )
Step-by-step explanation:
Given that:
Sample size 
71
Sample size 
31
Sample mean 
41628
Sample mean 
36,379
Population standard deviation 
= 4934
Population standard deviation 
4180
At 98% confidence interval level, the level of significcance = 1 - 0.98 = 0.02
Critical value at 
The Margin of Error = 
= 
= 
= 
= 2218.40
The Lower limit = 
= ( 41628 - 36379 ) - ( 2218.40)
= 5249 - 2218.40
= 3030.6
The upper limit = 
= ( 41628 - 36379 ) + ( 2218.40)
= 5249 + 2218.40
= 7467.4
∴ 98% Confidencce Interval is ( 3030.6, 7467.4 )
When all sides of a quadrilateral are equal (indicated by tick marks on the four sides) in length and connect the opposing vertices with a line, it will form four 90° angles. Therefore, each equation will equal 90.
10x= 90
x+y= 90
3z= 90
The measure of angles 1 and 3 can be solved as they are so:
10x= 90 ➡️ x=9
3z= 90 ➡️ z= 30
The value of x is needed to solve for the measure of angle 2 so plug in the value of x and solve:
x+y= 90
9+y= 90
y= 81
Therefore the answer is a.
Answer:
-3.2b+9
5.8b
Step-by-step explanation:
Answer:
first one is d. a is the second one. b is the 3rd one. d is the 4th one. and a is the 5th one hope this helps!
Step-by-step explanation:
9514 1404 393
Answer:
1 solution: (0, 11)
Step-by-step explanation:
Each equation is in slope-intercept form. It is easy to see that the slopes are different and the y-intercepts are the same.
The fact that the slopes are different means there is one solution.
The fact that the y-intercepts are the same means that solution is the y-intercept.
