x is 12 just use a calculator bro you just divide 84 by 7
Step-by-step explanation:
Answer:
∠POS = 128°
Step-by-step explanation:
Angles on a straight line always add up to 180°
Therefore:
∠POS + ∠POQ = 180° (as they are the angles on line SOQ)
∠POS + 52° = 180°
∠POS = 180° - 52°
∠POS = 128°
7a)
If n is the amount of sides then there's 38 sides in a polygon with 665 diagonals
7b)
We do the same as 7a) but with 406. We get that 
and 
. A polygon cant have 30.04 sides
Answer:
25.4, 28.6
Step-by-step explanation:
Given parameters
sample size, n = 24
sample mean, X = 27
population standard deviation, s = 3
critical value, Zα/2, where α = 0.01
99% confidence Interval, CI, is given as follows
CI = X ± Zα/2 × (s/√n)
Zα/2 = Z0.01/2 = Z0.005 = 2.576
CI = 27 ± 2.576 × (3/√24)
= (25.42 ,28.57)
