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Tutors Answer Your Questions about Distributive-associative-commutative-properties (FREE)
Question 92891: can you help me name the property illstrated by each statement
5. 6 (u + 2v) = 6u + 12v
2. 5(m)(n) =5(m)n
7. (2a + 3b) + 4c = 2a + (3b +4c)
4. 3t + 2r = 2r + 3t
6. 0 = 100(0)
9. gx =xg
8. pq + n = qp + n
10. 15(c + d) = 15(d + c )
Click here to see answer by chitra(359)  |
Question 94966: Hi! I keep doing this problem but it will not work for me and I don't know what I'm doing wrong.
[5(-x-8)-20] - [5-3(x-5)+19]
Can you show me the steps too?? Please and thank you. I need this by tonight if that would be alright.
Click here to see answer by bucky(2189) |
Question 94966: Hi! I keep doing this problem but it will not work for me and I don't know what I'm doing wrong.
[5(-x-8)-20] - [5-3(x-5)+19]
Can you show me the steps too?? Please and thank you. I need this by tonight if that would be alright.
Click here to see answer by scott8148(6628)  |
Question 95214: The question begins: "State the property that justifies each step when simplifying the expression":
3x + (5 + 6x) = 3x + (6x + 5) __________
= (3x + 6x) + 5 __________
= (3 + 6)x + 5 __________
= 9x + 5 __________
They all seem to be the associative property of addition, but that seems too easy. Any clue?
Click here to see answer by jim_thompson5910(35256) |
Question 95435:  = +
What is B?
I tried the following approach:
7=A*(x+9)+B*
7=x*(A+Bx)+9A+5B
7=9A+5B & x(A+Bx)=0
I could only say B=(7-9A)/5 & either x=0 or x=-A/B
I'm not sure how to move from here to the next in order to find the solution.
Could you help? The question was given by teacher on the board, not from a textbook.
Click here to see answer by stanbon(75887) |
Question 95517: Hello!
I have tried to work this problem out but my answer doesn't appear to work when I plug it back in. I must be doing something wrong.
Solve the following equations algebraically:
(x+7)*(x-1)=(x+1)^2
Here is my work:
I foiled both of the sides to come up with:
x^2+7x-1x-7=x^2+2x+1
I brought over the right side to give me:
4x=-6
x=-3/2
I could be doing this totally wrong.
Any help will be greatly appreciated.
Click here to see answer by edjones(8007)  |
Question 96158: hi! i don't know if this would be considered in this category because it involves factoring.i thought this was the closest to it.
a^2(x+y)+b^2(x+y)
i don't know where to start because after you use foil there is no GCF. What do i do after that?
Click here to see answer by checkley71(8403) |
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