Answer:
I should use at least 304 students
Step-by-step explanation:
Margin error (E) = t × sd/√n
E = 40
sd = 300
confidence level (C) = 98% = 0.98
significance level = 1 - C = 1 - 0.98 = 0.02 = 2%
t-value corresponding to 2% significance level and infinity degree of freedom is 2.326
n = (t×sd/E)^2 = (2.326×300/40)^2 = 17.445^2 = 304 (to the nearest integer)
X = 60°
To work this out, you would do 50°+70° to get 120°. You would then subtract this from 180° (the total for any triangle) to get the final answer of 60°.
Hello there!
Your final answer would be
(<span>
(6x + 5) • (6x - 5)).Your correct answer would be
(option d).I hope this helps you!</span>
I think it would be y= -1/3+3
Answer:
12 times.
Step-by-step explanation:
That would be 40 * 0.3 = 12.