Answer:
Answer 3 (-6x-2y=12)
Step-by-step explanation: Turn to slope form to check
First- Add the 6x from both sides
-2y=6x+12
Second- Divide by two on both sides
y= -3x-6
Do 3 minus 1.9
- To make this easier I would do
3 - 2 = 1
1 + 0.1 = 1.1
Answer: −
2
±
√
13
Step-by-step explanation:
(-b±√(b²-4ac))/(2a)
Plug in and solve.
3*3*3=9 perhaps?? And then it would be in Surface Area??
<h2>
Answer with explanation:-</h2>
Let be the population mean.
By considering the given information , we have
, since the alternative hypothesis is right tailed , so the test is right tail test.
Given : Sample size : n=64, which is a large sample (n>30) so we use z-test.
Sample mean :
Then, Standard deviation :
Test statistic for population mean :-
i.e.
P-value =
Since the p-value is less than the significance level , so we reject the null hypothesis that mean we can accept the alternative hypothesis.
Thus , we conclude that the true mean concentration can exceeds 22 blops .