Answer:
angle 4 = 80 degrees
angle 5 = 100 degrees
Step-by-step explanation:
25.05 I would think mean .05 is the change and if there is not a month cost than it would not double
Answer:
Jeff got 20 answers right.
Step-by-step explanation:
The maximum number of points Jeff can get is 100. (25 * 4) However, for each question he gets wrong, he's actually losing 6 points because he doesn't get the four points for getting right, and has the additional -2 points for getting it wrong. Since he only got a score of 70, that means he lost 30 points.
30/6 = 5. So he missed 5 question and got 20 question right.
Confidence interval = p+/- standard error
Where;
p = percentage of he population using internet = 57% = 0.57
Standard error = Z*Sqrt [p(1-p)/N)]; where N = sample size = 1025, Z at 99% confidence = 2.58
Substituting;
Standard error = 2.58*Sqrt [0.57(1-0.57)/1025] ≈ 0.04
Then,
Confidence interval for the true population using the internet = 0.57 +/- 0.04 = [(0.57-0.04),(0.57+0.04)] = [0.53,0.61] = [53%, 61%].
Answer:
the right ans is 63 ok
Step-by-step explanation:
1cm is 9m so 7 is = 7*9=63
