Complete Question
Answer:
a
b
Step-by-step explanation:
From the question we are told that
The sample size is n = 60
The first sample mean is 
The second sample mean is 
The first variance is 
The first variance is 
Given that the confidence level is 95% then the level of significance is 5% = 0.05
Generally from the normal distribution table the critical value of 
is
Generally the first standard deviation is
=> 
=> 
Generally the second standard deviation is
=> 
=> 
Generally the first standard error is
Generally the second standard error is
Generally the standard error of the difference between their mean scores is mathematically represented as
=> 
=>
Generally 95% confidence interval is mathematically represented as
=> 
=>
The correct answer is <span>0.375
</span>
We need to find the surface area of the solid.
Since it's formed by cubes with edges of 1 meter, each square on the surface of the solid has an area equal to:
Thus, to find its surface area, we need to count the number of squares on its surface, and then multiply this number by 1 meter².
We can see that this solid has two equal latera surfaces (right and left). Each one of them has 17 squares.
Also, the number of squares on the horizontal surfaces is the same on the top and bottom of the solid. Each one of them has 10 squares.
And the vertical surfaces on the front and back of the solid have the same number of squares: 8 squares each.
Then, adding those quantities and multiplying the result by two, we find the total number of squares on the surface of the solid:
Therefore, the surface area of the solid is 70 m².
Answer:
Step-by-step explanation:
Answer:
28/9 or 3 1/9
Step-by-step explanation:
7/9 + 7/9 + 7/9 + 7/9 = litera they drink in 4 days or 7/9 x 4
7/9 • 4 = 28/9 or 3 1/9
