|
Tutors Answer Your Questions about Distributive-associative-commutative-properties (FREE)
Question 65819: I'm sorry that this question isn't on this topic, but i couldn't find another topic for my question, and anyway this topic is the most closely related to my question.
My question is about the "closure property". in the newest barrons review book, the blue one {for the ny regents}, it says on page 8 that real numbers only have this closure property for addition and multiplacation. My problem is why doesn't subtraction and division also have this closure property. please show me examples to tillustrate.
happy new year
nathan
Click here to see answer by funmath(2873)   |
Question 66090: Which property or properties of inequality allow(s) you to conclude that is 2y>y-3 ,then y>-3
Answer Choices:
A) Multiplication Property
B) Addition Property
C) Division Property
D) Addition and Division Properties
Click here to see answer by uma(370) |
Question 66088: A poser has a length 4 inches greather than is width w. Demetrius will place a frame 2 inches wide around the poster. The area of the poster and frame together is 672 square inches. Which factored equation could be used to find the width of the poster?
Answer choices:
A) (w+32(w-20)=0
B) (w+4)(w+8)=0
C) (w+2)(w+6)=672
D) (w-32)(w+20)=0
Click here to see answer by uma(370) |
Question 66106: A poster has a length 4 inches greather than its width w. Demetrius will place a frame 2 inches wide around the poster. The area of the poster and frame together is 672 square inches. Which factored equation could be used to find the width of the poster?
Answer Choices:
A (w+30)(w-20)=0
B (w+4)(w+8)=0
C (w+2)(w+6)=672
D (w-32)(w+20)=0
Click here to see answer by Earlsdon(4898) |
Question 66818This question is from textbook Algebra 1
: (y^-5 - 3y^5x^-2 + y^5) x^-2
________________________________________
(x^2 - p + x^-2) y^5
On this problem I am supposed to use the distributive property and write the answer with all exponents positive. I think I would multiply x^-2 by everything on the top and multiply y^5 by everything on the bottom. Where I get confused is changing all exponents to positive. If they're negative I move them to the opposite side and change the sign, right? Somehow, I'm just not getting the right answer. Thanks.This question is from textbook Algebra 1
Click here to see answer by stanbon(26259) |
Question 67660: ok its more like factoring... but i totally forgot how to factor. ok so heres the problem:
6x^2-7x+2....
and i tried it and i got something like (3x+2)(2x-3) but ya thats not right because when i used FOIL it doesnt come out to what it should be... please help?!
Click here to see answer by checkley71(8405) |
Question 67660: ok its more like factoring... but i totally forgot how to factor. ok so heres the problem:
6x^2-7x+2....
and i tried it and i got something like (3x+2)(2x-3) but ya thats not right because when i used FOIL it doesnt come out to what it should be... please help?!
Click here to see answer by stanbon(26259) |
Question 70362: [(7x^2-9x+4)-(9x^2+3x-2)]-[(5x^2+4x-6)+(-8x^2+6x+1)]
Ok I can get all the way to the end and then I'm stuck.
Below is what I ended up with:
= -9x^2+8x^2+7x^2-5x^2-9x-6x-4x-3x+4+2+6-1
= x^2-4x+11 (<---is that right)
Click here to see answer by funmath(2873) |
Question 70362: [(7x^2-9x+4)-(9x^2+3x-2)]-[(5x^2+4x-6)+(-8x^2+6x+1)]
Ok I can get all the way to the end and then I'm stuck.
Below is what I ended up with:
= -9x^2+8x^2+7x^2-5x^2-9x-6x-4x-3x+4+2+6-1
= x^2-4x+11 (<---is that right)
Click here to see answer by bucky(1732) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620
|
| |
