Answer:
P(X < 80) = 0.89435.
Step-by-step explanation:
When the distribution is normal, we use the z-score formula.
In a set with mean 
and standard deviation 
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question, we have that:
P(X < 80)
This is the pvalue of Z when X = 80. So
has a pvalue of 0.89435.
So
P(X < 80) = 0.89435.
Answer:
C-7/8
R-8/9
P-61/66
L-11/18
I-3/4
A-7/12
O-47/55
H-29/40
S-28/33
T-4/5
M-11/12
E-71/84
U-13/42
N-19/20
I swear to god if I don’t get brainliest I’m going to lose it I haven’t done this math in like four years and it kinda took a while.... but I hope it helped u ☺️☺️☺️❤️❤️❤️❤️
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
The multiples of 3 are
3, 6, 9, 12, 15, ...........
The terms form an arithmetic sequence with common difference of 3.
The sum to n terms is
= 
[2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Here a₁ = 3 and d = 3, thus
= 
[ (2 × 3) + (139 × 3) ]
= 70(6 + 417) ] = 70 × 423 = 29610 → C
(x+2)^2 over x+2
x^2+4 \x+2
x+2
Answer:
66 ft
Step-by-step explanation:
L ∝ n
L = kn , k -> number of sections
Length of 3 sections= 18 ft
3n = 18
n = 18/3
n = 6 ft
Length of 1 section of fence = 6 ft
Length of 11 sections of fence = 6* 11 = 66 ft
