Step-by-step explanation:
Given that,
- Length of the one portion of the board = x feet
- Length of the another portion = (7x – 9) feet
According to the question,
Total length = Sum of the length of the two pieces
Total length = {x + (7x – 9)} feet
Total length = {x + 7x – 9} feet
<u>Total length = (8x – 9) feet</u>
Therefore, the total length of the board as a simplified expression in x is (8x – 9) feet.
3x+2=14
-2 -2
3x=12
/3 /3
X=4
3x + 5 = 20
x = 5
Hope this helps
Answer:
(-3,7)
Step-by-step explanation:
Mean means average, so you would add the numbers up and divide by the amount of numbers in the set.
