Step-by-step explanation:
(1 - cos²A) (1 + tan²A) = tan²A
(sin²A)(sec²A) = tan²A
(sin²A)(1/cos²A) = tan²A
(sin²A)/(cos²A) = tan²A
tan²A = tan²A → <u>Proved</u>
You should look for outliers. If there is an outlier then you should use median because if you use mean the data would be skewed.
2x-8=5x+5
5x-2x=-8-5
3x=-13
x=-13/3,
or
x=-4 1/3
Answer:
#1=c,#b=d,#3=b,#4=a
Step-by-step explanation:
hope this helps
Answer:
See below
Step-by-step explanation:
Morning flight mean 15 minutes SD = 5
30 minutes late would be 15/5 = 3 SD below the mean
z = 3
Evening mean 20 minutes being 10 more minutes late = 10/3 =3.33 below the mean
z score = 3.33
evening is more late than the AM
