Answer:
$27 000
Step-by-step explanation:
15 000*30*6÷100
=$27 000
Answer:
(y-12)/4
Step-by-step explanation:
If g(x) is the inverse of f(x)
and f(x) = 4x + 12
f⁻¹(x) = g(x)
let f(x) be represented as y
f(x)
= y
y = 4x + 12
subtract 12 from both sides
y-12= 4x
divide both sides by 4
(y-12)/4 = x
so f ⁻¹ (y)= (y-12)/4 so g(x) = (x-12)/4
Answer:
6 and 2/5
Step-by-step explanation:
6 2/5 ÷ 1/1 keep cange flip
32/5× 1/1
32/5
32÷5
=6/25
Answer:
d
Step-by-step explanation:
i know it's rhe right answer
Answer:
b. 239
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:
So a sample of at least 239 is required.
The correct answer is:
b. 239