Answer:
2.275%
Step-by-step explanation:
The first thing to do here is to calculate the z-score
Mathematically;
z-score = (x-mean)/SD
from the question, x = 12,300 hours , mean = 11,500 hours while Standard deviation(SD) = 400 hours
Plugging the values we have;
z-score = (12,300-11,500)/400 = 800/400 = 2
Now, we want to calculate P(z ≤ 2)
This is so because we are calculating within a particular value
To calculate this, we use the z-score table.
Mathematically;
P(z ≤ 2) = 1 - P(z > 2) = 1 - 0.97725 = 0.02275
To percentage = 2.275%
Answer:
Step-by-step explanation:
ans is c) f(x) is a polynominal function. The degree is 5 and the leading coefficient is -7.
x -> ∞, f(x) -> ∞; x -> -∞, f(x) -> -∞
the only ans that follows the above is a) f(x)=7x^9-3x^2-6
correct statments are: c) (1, 6.08) and (3, 0.75) are local extrema for the function and d) (-2, -9.67) is the global minimum for the function.
F(x)=2x²+5√(x-2)
f(3)=2(3)²+5√(3-2)
= 2 (9) + 5√1
= 18 + 5
= 23.
Step-by-step explanation:
I have two step
step 1
32+b=54
32+9=54
41=54
you divide both side by 41 and the answer is 1 and 1
step two
32+b=54
b=54-32
9=22
you divide both side by 9 and the answer is 2,44
From least to greatest it would be: 1.2, 1.23, 2.31, 3.2 I believe hope that helped