Answer:
16
Step-by-step explanation:
Answer:
4) 26+4/842-/×375-^×
5)/^9+37+×+454+12
Step-by-step explanation:
Answer:
<h2>
aₙ = 7n - 10</h2>
Step-by-step explanation:
The nth term: 
So:
a₄ = a₁ + 3d
18 = a₁ + 3d ⇒ 3d = 18 - a₁
a₇ = a₁ + 6d
39 = a₁ + 6d
39 = a₁ + 2(18 - a₁)
39 = a₁ + 36 - 2a₁
39 = 36 - a₁
a₁ = -3
3d = 18 - (-3)
3d = 21
d = 7
So the nth term:

Answer:
2.28%
Step-by-step explanation:
given that the height, in inches, of a 25-year-old man is a normal random variable with parameters = 71 and variance = 6:25.
If X is the height of 25 year old man then X is N(71, 2.5)
a) Probability of men in the 6-footer club are over 6 feet, 5 inches
=
= 0.0228
percentage of men in the 6-footer club are over 6 feet, 5 inches
100 times prob
=2.28%
2.28% of men in the 6-footer club are over 6 feet, 5 inches willbe taller than 6 feet and 5 inches