Answer:
Before tax are $538.45
Step-by-step explanation:
549.22 / 1.02 = 538.45
Before tax are $538.45
Answer:
A=1
Step-by-step explanation:
The formula to find the area of a circle is πr^2, meaning that you divide the diameter in half which is 1. So 1^1 is one. The area would be one.
Hope this helps :)
Answer:
15
Step-by-step explanation:
4g(3)+2[g(2)]²
4((3+4)/√7(3)-5)+2[(2+4)/√7(2)-5]²
=15
Answer:
a) X take values in the interval [0; 1].
b) k = 20
c) P(X≥0.7)=0.46
Step-by-step explanation:
As X represents percentage of iron contained in an ore sample taken from a particular region, it can take values within 0 (0%) and 1 (100%).
Within this values (0 and 1), to be a valid probability density function, the area under the curve of the density probability function has to be 1. This will allow us to calculate the value of k.
This can be written as:
Now, we have to calculate the probability that x≥0.7 (ore sample contains at least 70% iron).
This can be calculated as: