X=2
x=15
4x+1=9
-1 -1
4x=8
4/4x=8/4=2
x/5-1=2
+1 +1
x/5=3
(5) (5)
x=15
Answer:
A measure of average is a value that is typical for a set of figures. Finding the average helps you to draw conclusions from data. The main types are mean, median and mode. Data is also often grouped.
Step-by-step explanation:
To find the mean add all the ages together and divide by the total number of children.
If you type all those ages into a calculator it is easy to make an error.
52). 5x=45 Divide each side of the equation by 5.
53). -3x = 12 Divide each side by -3.
54). x/4 = 10 Multiply each side by 4 .
55). x/3 = -8 Multiply each side by 3 .
1). x -10 = 12 . Add 10 to each side.
3). x + 8 = 16 Subtract 8 from each side.
5). 5 + x = 6 Subtract 5 from each side.
7). x - 4 = 9 Add 4 to each side.
Thank you for the 5 points. The crust and warm water are delicious.
Elga's age = x
Alvin's age = x + 7
x + x + 7 = 97.
Simplify the left side of the equation
2x + 7 = 97.
Subtract 7 from each side
2x = 90.
Divide each side by 2
x = 45
Since x is equal to Elga's age, Elga is 45 years old
