Answer:
x = (5 + sqrt(73))/8 or x = (5 - sqrt(73))/8
Step-by-step explanation:
Solve for x over the real numbers:
4 x^2 - 5 x = 3
Subtract 3 from both sides:
4 x^2 - 5 x - 3 = 0
x = (5 ± sqrt((-5)^2 - 4×4 (-3)))/(2×4) = (5 ± sqrt(25 + 48))/8 = (5 ± sqrt(73))/8:
Answer: x = (5 + sqrt(73))/8 or x = (5 - sqrt(73))/8
Answer:
55-21=34
50-20=30
Step-by-step explanation:
hope i helped out :)
= 9 * 10^5 * 3 * 10^10
= 27 * 10^5 * 10^10
= 27 * 10^15
= 2.7 * 10^16 - The best selection appears to be the first option.
Good luck :)
The confidence interval would be (0.122, 0.278).
We first find our z-score. We want a 95% confidence interval:
0.95/2 = 0.475
Looking this up in the z-table, (http://www.statisticshowto.com/tables/z-table/) we see the z-score is 1.96.
The formula we will use is:
In this problem, p = 20/100 = 0.2, and n=100: