Answer:
x = -84/11
Step-by-step explanation:
Hope it's right
Answer: The first number is 4
Explanation: Since the sum of the two numbers is ten, x + y = 10
Also, since the difference of the two numbers is two, then x - y = 2
Since x - y = 2, another way to write that is x = y + 2 and since x is exactly the same as y + 2, we can plug in "y + 2" in place of x in the first equation (x + y = 10) to get (y + 2) + y = 10. Then we solve this equation by combining like-terms.
2y + 2 = 10
2y = 8
y = 4
Since x = y + 2, x = 4 + 2 or x = 6
I hope this helped you!
You would multiply 12.50 by 4 because thats how much each lesson is and you go 4 times a month. You then multiply this by 12 because there are 12 months in a year. The answer comes out to $600 a year. Hope this helps. XD
Answer: NO.
Step-by-step explanation:
We know that , the 95% confidence interval indicates that the researcher can be 95% sure that the true value of population mean falls in it.
Given : A company is interested in estimating the costs of lunch in their cafeteria.
After surveying employees, the staff calculated that a 95% confidence interval for the mean amount of money spent for lunch over a period of six months is ($720, $900).
Then, the correct interpretation would be : The company can be 95% sure that the true value of population mean falls in it.
