Questions on Algebra: Distributive, associative, commutative properties, FOIL answered by real tutors!

Tutors Answer Your Questions about Distributive-associative-commutative-properties (FREE)

Question 46723: 5x(a-9)-4(9-a)
could really use some help factoring this one
Click here to see answer by Nate(3500)

Question 46911: factor by grouping:

30y^2 + 10y - 20
30y^2 - 20y + 30y - 20
(30y^2 - 20y) + (30y - 20)
10(y + 1)(3y - 2)
not even sure if I laid that out right but this one was tricky

Click here to see answer by stanbon(57395)

Question 46961: factor:
8x^3 - 1

Click here to see answer by Nate(3500)

Question 46991: solve:
(a + 3)(a + 4) = -72
don't understand how the answer is -12,5
I see a^2 + 7a + 12 = 72
a^2 + 7a + 12 + 72
but it's all wrong and I can't seem to figure where it was that I went wrong
Click here to see answer by mathchemprofessor(65)

Question 47013: physics:
an object is released from a plane at an altitude of 1600 ft.
the initial velocity is 0ft/s. how many seconds will the object hit the ground?
d=vt+16t^2 is the formula but I'm just not seeing where this is supposed to all come together. my guess is that it will fall very darn fast.
Click here to see answer by venugopalramana(3286)

Question 47009: geometry problems:
I'm uncertain as how to set these up.

the length of a rectangle is two feet more than twice the width.
the area is 144ft^2. find the length and the width of the rectangle.
Click here to see answer by venugopalramana(3286)

Question 47017: solve:
2y(y+4)=-5(y+3)
2y(y+4)-5(y+3)=0
unclear as to where to take it from there.
I don't see how they got -3/2,5 out of that. I'm trying though.
Click here to see answer by uuuu(3)

Question 47051: find 3n^2 if n(n+5)=-4
Click here to see answer by Nate(3500)

Question 47050: 2y(y+4)=-5(y+3)
I need to solve this one but unsure where to begin.
Click here to see answer by Nate(3500)

Question 47148: determine how many times -1 is a root of x^3+2x^2-x-2=0 then find the other roots

Click here to see answer by Earlsdon(6287)

Question 47148: determine how many times -1 is a root of x^3+2x^2-x-2=0 then find the other roots

Click here to see answer by pizza(14)

Question 47150: an 18inch by 20 inch sheet of cardboard is cut and folded to make a box for the great pecan company
1.Write a polynomial function to model the volume of the box
2.Graph the function
3.The company wants the box to have a volume of 224 cubic inches.Write an equation to model this situation.
4.Find a positive integer for x.
Click here to see answer by Earlsdon(6287)

Question 47642: How can I isolate R1?
1/1.33 = 1/(R1-6) + 1/R1
This is what I've done:
1/1.33 = R1 + (R1-6)
-------------
(R1-6)(R1)
1/1.33 = 2R1-6
------
(R1-6)(R1)
I did not know what to do after this. I also tried the following
1/1.33 = R1/ (R1-6)(R1) + (R1-6)/(R1-6)(R1)
1/1.33 = 1/(R1-6) + 1 / R1
This as far as I've gone
ISBN 0471-15183-1 CHAPTER 20 PROBLEM 54
Click here to see answer by stanbon(57395)

Question 47786: How do I multiply 7(r+2)(r-2)
Click here to see answer by checkley71(8403)

Question 47863: the volume of a fudge tin must be 120 cubic centimeters. The tin is 7 centimeters longerthan it is wide and six times longer than it is tall
wtrite a polynomial equation that expresses the volume of the tin
Use the polynomial to determine thedimensions of the tin
Click here to see answer by Nate(3500)

Question 47878: (x+h)(x+h)(x+h)
Click here to see answer by stanbon(57395)

Question 47878: (x+h)(x+h)(x+h)
Click here to see answer by Nate(3500)

Question 48264: 16+(-19)+30+(-27)+4+37+(-108)
Click here to see answer by checkley71(8403)

Question 48341: what is the answer to 4x^2+16
Click here to see answer by stanbon(57395)

Question 48952: 1. Two sides of a parallelogram measure 60 centimeters and 40 centimeters . If one angle of the parallelogram measures 132 degrees find the length of each diagonal.
2. The lengths of the sides of a triangle are 74,38, and 88 feet. What is the length of the altitude drawn to the longest side.
3. A 757 passenger jet and a 737 passenger jet are on their final approaches to san diago international airport.
a. The 757 is 20 thousand feet from the ground, and the angle of depression to the tower is 6 degrees. Find the distance between the 757 and the tower.
b. The 737 is 15 thousand feet from the ground the angle of depression to the tower is 3 degrees. What is the distance between the 737 and the tower
c. How far apart are the jets

Click here to see answer by venugopalramana(3286)

Question 49265: slove the equation
5d+17=4(d+3)
-4(n+2=3(n-4)
7(t-3)=2(t-9)+2t
3(2x-5)-x=-7(x+3)
its this correct 1/5x+1/2=1
10(1/5x+1/2)=1
2x+5=1
x=-2
Click here to see answer by TheAntiheroX9(4)

Question 49272: 0=3x*3x-5x+11
x*x-6x+9=0
5+3*3-16+4
12+20/4-5
the area of a circle is 20(3.14) find the radius
the radius of a circle is 9. find circumference
Click here to see answer by Nate(3500)

Question 49268: 1.1h+1.3=6.8
6.5m+1.5-4.3-0.7
1.7(x+5)=2.19.7
18.13-5.18c=6.23c-8.23
Click here to see answer by ikdeep(226)

Question 49274: what is the square root of 24,40, and 72square
can you explain how to solve it thank very much
Click here to see answer by ikdeep(226)

Question 49260: are terms and factors the same thing? why or why not?
Click here to see answer by jake_6233(74)

Question 49440: Can someone help me with this problem?
On this problem I need to complete the statement using the
(a) Distributive property
(b) Commutative property of addition
(c) Commutative property of multiplication
6 x (5 + 4) =
Thanks, Sher
Click here to see answer by stanbon(57395)

Question 49445:
But how do i get that answer?
Thanks
Click here to see answer by venugopalramana(3286)

Question 49788: 3x+2(5x-7)
Click here to see answer by stanbon(57395)

Question 50073: I was working on my homework and this might be a stupid question but I'm only in 7th grade taking accelerated math. Anyway there was this problem 2s+12r and I'm suppose to restate each expression using distributive propery. How do I do that???? I answered 14xsr is the answer is that right???
Click here to see answer by hulamc723(15)

Question 50143: hey i need help with the associative property with this problem in my workbook. it says (15+x)+2=2+(15+x) and i missed it when i put what property it was in. i put associative(+). i had a problem similar to that and i put associative (+)&(x) and i still got that problem wrong.so i'm not sure why and i was wondering if you could help me.
sincerally,
in need of pre-algebra help

Click here to see answer by lkwtcnj(8)

Question 50233: Question # 26 says x(z+3)?
Question # 40 says 6(78m+20d+12v)?
Question # 48 says 6x squared+7/8x-x/8?
Question # 68 says 6ab/c(a+2)?
Click here to see answer by tutorcecilia(2152)

Question 50259: x squared +17x+72/x+9
Click here to see answer by Nate(3500)

Question 50257: x squared +17x+72/x+9
Click here to see answer by hulamc723(15)

Question 50331: I REALLY NEED HELP WITH THIS....
Click here to see answer by rapaljer(4667)

Question 50421: Please help me find an example of the commutative law of addition in numbers.
Click here to see answer by venugopalramana(3286)

Question 50441: Describe the transformation you could use to solve the equation.
x-4=12
Click here to see answer by tutorcecilia(2152)

Question 50522: name the property
1. o=100x0
2. 5(mxn)=(5xm)n
3. 3t+2r-2r+3t
Click here to see answer by piglet162431(90)

Question 50428: I would like to know if my ansewres to these are correct, please.
Solve: 4(6-2+5-7) the answer I got was -6
Solve: 2m(xy-3p) the answer I got was 2m-3p+xy
Honestly, I don't know how to do these so I could use really use your help. Thank you.
Click here to see answer by rapaljer(4667)

Question 50523: name the property
1. o=100x0
2. 5(mxn)=(5xm)n
3. 3t+2r-2r+3t
Click here to see answer by sinadone(8)

Question 50741: -4y+10=-2(3y+1) this is where I get lost on what to do
-4y+10=-2*3y+1

Click here to see answer by seawind(8)

Question 50836: (3x-4)(2x+5)= 0 -find for x- I can't figure out about order of operations
Click here to see answer by checkley71(8403)

Question 50839: I am having problems understanding how to simplify equations using the distributive, associative, and commutative properties. Here is an example.
Simplify m3*m4. Say which property you used ina ll of your steps. I also need some advice. I am in honors algebra in 8th grade, and i feel like its really hard and that i don't belong there. I can't switch to a lower level; so i have to deal with this extremely hard class for the entire school year! Any help would be greatly apprciated.
Thank you,
Victoria
Click here to see answer by stanbon(57395)

Question 50850: hwo do you solve problems like 98*7 by using the distribuative property
Click here to see answer by stanbon(57395)

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