Answer:
y=3
Step-by-step explanation:
X+y and y+x are the same as stated by the commutative law.
This is because let’s say x=2 and y=3,
2+3=5 and 3+2=5
Answer:
y = 7
Step-by-step explanation:
Simplifying
6y + 3 = 45
Reorder the terms:
3 + 6y = 45
Solving
3 + 6y = 45
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-3' to each side of the equation.
3 + -3 + 6y = 45 + -3
Combine like terms: 3 + -3 = 0
0 + 6y = 45 + -3
6y = 45 + -3
Combine like terms: 45 + -3 = 42
6y = 42
Divide each side by '6'.
y = 7
Simplifying
y = 7
Answer:
a. 1965
b. 8 years
Step-by-step explanation:
For answers to questions like these it can work to consider the smallest possible dataset.
<h3>Dataset</h3>
For our purpose, consider the 9 years/values to be averaged to be ...
1, 2, 3, 4, 5, 6, 7, 8 ,9
<h3>Observations</h3>
a. The center value of the data set is 5. Its number is 5-1=4 more than the first one.
The first centered value is from the year 1961 +4 = 1965.
b. The 4 values at the beginning, and the 4 values at the end do not have a corresponding "average" value. That is, 4+4 = 8 values in the series are lost with respect to the number of average values.
8 years of values are lost.
Answer: -19
Step-by-step explanation:
5xS
5-8x3= -19