Answer:
None
Step-by-step explanation:
You have not given us a picture or problem four.
Answer: x = 16.75
Step-by-step explanation:
I'm not good at square roots but if you divide both sides by 2:
(2x – 9) • 2 / 2 = 49 / 2
simplify:
2x – 9 = 49/2
add 9 to both sides:
2x – 9 + 9 = 49/2 + 9
simplify:
2x = 67 / 2
divide both sides by 2:
2x ÷ 2 = 67/2 ÷ 2
simplify:
x = 67/4
Answer:
x = 16.75
Answer:
160-128=32
Step-by-step explanation:
distribute what is in the parentheses
Answer:
We are 90% confident that the true proportion of teenagers who have used at least one informal element in school writing assignments is between 0.464 and 0.518
Step-by-step explanation:
We can begin finding the estimator for the proportion of interest:
The confidence level is 90% , and the significance level would be given by and . And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
Replacing the info given we got:
We are 90% confident that the true proportion of teenagers who have used at least one informal element in school writing assignments is between 0.464 and 0.518
ANSWER X=4. You basically plug what y equals to into the second equation the solve for x.