Answer:
$15.00
Step-by-step explanation:
Multiply the original cost by 1.25 to represent the mark up rate.
Answer:
Step-by-step explanation:
We have been given a polynomial and we are supposed to simplify our polynomial.
We will use factoring to simplify our polynomial. Let us factor out the greatest common factor of all the terms.
We can see that 16, 6 and 4 has 2 as their greatest common factor.
The greatest common factor of is r.
The greatest common factor of is t.
So the greatest common factor of the terms of our expression will be .
Let us factor out from our given polynomial.
As we can not factor our expression more, therefore, we will get after simplifying our polynomial.
Answer:
or
Step-by-step explanation:
Given
Required
Find the possible values fo x
Square both sides
Equate to 0
Expand
Factorize:
Split:
or
or
or
Answer:
A. -1.6; not significant
Step-by-step explanation:
The z-score of a data set that is normally distributed with a mean of and a standard deviation of , is given by:
.
From the question, the test score is: , the mean is , and the standard deviation is .
We just have to plug these values into the above formula to obtain:
.
This simplifies to: .
.
We can see that the z-score falls within two standard deviations of the mean.
Since the value is not significant.
The correct answer is A. -1.6; not significant