Answer:
15√20/6√125
=√20/√5
=2
Step-by-step explanation:
I think the answer would be 4^4
Because 9-5 =4 not sure though
Answer:
(71.28, 78.72)
Step-by-step explanation:
We have the following information from the statement:
mean (m) = 75
sample standard deviation (sd) = 5
Sample size (n) = 13
Significance level (alpha) = 1 - 0.98 = 0.02
Degrees of freedom for t-d (df) = n - 1 = 13 - 1 = 12
The critical value would be:
t (alpha / 2) / df = T (0.01) / 12 = 2,681 (this for the table)
Margin of error equals:
E = t (alpha / 2) / df * sd / n ^ (1/2), replacing:
E = 2,681 * 5/13 ^ (1/2)
E = 3.72
Therefore, the interval of 98% confidence interval would be:
75 + 3.72 = 78.72
75 - 3.72 = 71.28
(71.28, 78.72)
Answer:
BD = 16, ∠ BAD = 45°
Step-by-step explanation:
Given that Δ ABC and Δ BAD are congruent, then corresponding sides and corresponding angles are congruent, then
BD = AC = 16
and
∠ BAD = ∠ ABC = 45°
