5x + 3 = 3x + 11
• first put all the x-values on one side and the rest on the other
Remember: when the number moves to the other side of the equal sign the sign (+ OR - switches. For ex: the 3 on the left becomes negative when moved to the right side of the equal sign)
5x - 3x = 11 - 3
• subtract left and right sides separately
2x = 8
• divide both sides by 2 to solve for x
2x/2 = 8/2
x = 4 (final answer)
1. 3
2. 4
3. 10
4. 15
5. 50
6. 40
I'm a beginner, and I haven't done this kind of math in a while, but I hope this helps. Have a great day!
- Blue
Answer:
option 2
2x²- x - 1
Step-by-step explanation:
We are given points: (-1,2), (0,-1) and (2,5)
Substitute each point one by one in the quadratic equation to check if the quadratic equation contains all points mention.
2) f(x) = 2x²- x - 1
Point(-1,2)
f(-1) = 2(-1)² -(-1) -1
2 = 2 + 1 - 1
2 = 2
Point(0,-1)
f(0) = 2(0)² -(0) -1
-1 = 0 - 0 -1
-1 = -1
Point(2,5)
f(2) = 2(2)² -(2) -1
5 = 8 - 2 -1
5 = 6 - 1
5 = 5
Answer: (x+5) (x+2)
Explanation: tell me if you want the explanation
Answer:
<u>Standard deviation for owner-occupied units</u>
2.9797
<u>Standard deviation for renter-occupied units</u>
3.1594
Step-by-step explanation:
Let us find first the mean. This is the distribution expected value or expectancy.
<u>Mean for owner-occupied units</u>
0.003 + 2*0.002 + 3*0.023 + 4*0.102 + 5*0.209 + 6*0.223 + 7*0.201 + 8*0.149 + 9*0.053 + 10*0.035 = 6.293
To compute the variance for owner-occupied units, we add these values
then divide by 10 and take the square root to get the standard deviation 2.9797
<u>Mean for renter-occupied units</u>
0.008 + 2*0.027 + 3*0.287 + 4*0.371 + 5*0.155 + 6*0.090 + 7*0.043 + 8*0.013 + 9*0.003 + 10*0.003 = 4.184
To compute the variance for renter-occupied units, we add these values
then divide by 10 and take the square root to get the standard deviation 4.184
