Answer:
The solution for this system is:
Step-by-step explanation:
The problem states that we have to solve this system by the elimination method
In the elimination method, we transform the system in such a way that one variable can cancel each other. With this, we find the result of the other variable. Then, we can replace the variable we found in any of the equations, and we have the value of the variable that we had initially canceled.
In this problem, we have the following system:
If we add equations 1) and 2), the variable x is going to be eliminated
Now, we can replace the value of y in any of the equations, to find x:
I will replace in equation 2)
The solution for this system is:
You need a photo with this question
Break 42 into 40 + 2. Multiply 40 x 7=280
and 2 x 7=14. Then add 280 + 14 = 294.
Answer:
Two points to the left
Step-by-step explanation:
20.8/100 = 0.208
The number was 20.8, but now the new number moved
1. 2.08
2. 0.208
So my answer is two decimal points to the left.
I hope this helped!
Answer:
Mean of the Population or The claimed population mean 'μ' = 5.5 hrs.
Mean of the sample 'x⁻' = 6.25 hours
Step-by-step explanation:
<u><em>Explanation</em></u>:-
Given data A recent article in a college newspaper stated that college students get an average of 5.5 hrs. of sleep each night
Discuss about total college students so
<em>Mean of the Population 'μ' = 5.5 hrs.</em>
Given random sample size 'n =25
Given data the sampled students slept 6.25 hours per night
<em>mean of the sample 'x⁻' = 6.25 hours</em>