566
566. times $28+ 524 times $16= 15848+ 8384= $24,232
Work 16x+28y= 24232
X+y= 1090
Multiply 2 ne row by -16
-16xx-16y= -17440
12y= 6792
Divide by 12
Y= 566
The first two numbers of each result are the product of the two numbers
E.g. 8x2= 16- which are the first 2 numbers of 16106
The second set of numbers are the sum of the two numbers
E.g. 8+2=10- which are the next two numbers of 16106
The last set of numbers are the difference between the two numbers
E.g. 8-2= 6- which is the last number in 16106
Just apply this system to all the equations, but take care in noticing whether 1 or 2 digits are involved. Hope this helps!
Answer:
$43,920.
Step-by-step explanation:
We have been given that the salaries of elementary school teachers in a particular country are normally distributed with a mean of $38,000 and a standard deviation of $4,000.
We will use the normal distribution table to solve our given problem. From normal distribution table, we need to find the z-score corresponding to the top 7% or z-score corresponding to probability 93% (0.93).
From normal distribution table, we get our required z-score as 1.48.
Now, we will use z-score formula to solve for sample score as:
Therefore, the cutoff salary for teachers in the top 7% is $43,920.