Answer:
if a z-score is equal to +1, it is 1 standard deviation above the mean.
Step-by-step explanation:
The integer number that represents the changing in his account balance from beginning to end is of -20.
<h3>Which numbers belong to the set of integer numbers?</h3>
Non-decimal numbers, either positive or negative numbers, also zero, belong to the set, which can be represented by:
Z = {..., -3, -2, -1, 0, 1, 2, 3, ...}
A change can be represented by the <u>final value subtracted by the initial value</u>. For this problem, we have that:
- The initial balance is of $20.
- The final balance is of $0.
Hence the change in the balance is:
0 - 20 = -20.
And the integer is -20.
More can be learned about integer numbers are brainly.com/question/17405059
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| 8 | | 1 | | 6 |
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| 3 | | 5 | | 7 |
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| 4 | | 9 | | 2 |
Answer:
Step-by-step explanation:
we know that
The expression Subtract 
from 
is equivalent to the algebraic equation
Group terms that contain the same variable
Combine like terms
