Answer:
81x² - 81
Step-by-step explanation:
Step 1: Write expression
(9x - 9)(9x + 9)
Step 2: Expand by FOIL
81x² + 81x - 81x - 81
Step 3: Combine like terms
81x² - 81
Answer:
15% decrease
Step-by-step explanation:
First - 322,000
Years later - 273,700
Therefore, (322000 - 273700)/322000 = 0.15
0.15 * 100 = 15%
Mark me brainliest :))
Answer:
i really know but just add 65 and 75 then divide it by 2.
Step-by-step explanation:
Hope that was right!
Answer:
The solution would be (10, -3)
Step-by-step explanation:
In order to solve using elimination, multiply the top equation by -3 and then add the equations together.
-9x - 12y = -54
9x - 5y = 3
---------------
17y = -51
y = -3
Now that we have a value for y, we can put it into either equation and solve for x.
3x + 4y = 18
3x + 4(-3) = 18
3x - 12 = 18
3x = 30
x = 10
Answer:
Slope is 35
Step-by-step explanation:
