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Question 879752: How to solve: four times the sum of three times a number and -6 is 12
4(3x-6)=12
Multiply
12x-24 =12
Add 24 on both sides of the equation
12x -24+24= 12+24
12x = 36
Divide 12 on both sides
12x/12 =36/12
Therefore x=3
Check the solution
4(3(3)-6)=12
4(9-6)=12
4(3)=12
12=12
Click here to see answer by BigToosie(32)

Question 879841: Need to evaluate this and I dont know how
51P2
the two is at the bottom
Thank you for help
Click here to see answer by jim_thompson5910(35256)

Question 879945: Evaluate for x= -2
−x^3−5x^2−10x+5
Click here to see answer by ewatrrr(24785)

Question 879960: Find the expression for the area of a floor of a rectangular room with the following side lengths. Expand and simplify your answer.
a) x + 3 and 2x b) x and x - 5
Click here to see answer by ewatrrr(24785)

Question 880997: provide justification for the equation 5(x-2)= x-6
Click here to see answer by jim_thompson5910(35256)

Question 881302: solutions of or evaluate this {16 - (24 - 8 ) + 22 x 8 - 8 }

Click here to see answer by Artemis(1)

Question 881399: Evaluate for x= -2
-x^3-5x^2-10x+5
Click here to see answer by Fombitz(32388)

Question 881697: 6b - 4 = 2(b-3)
Could you also explain how you answered it if you do because I'm having a hard time with linear equations
Click here to see answer by rfer(16322)

Question 882434: Yesterday Jack read 2/5 of his book. Today, he read 3/4 of the rest of the book. Jack still has 36 pages left to read. How many pages does the book have?
Click here to see answer by ewatrrr(24785)

Question 883268: I need help simplifing these expressions
(r+3)^2
and (2m-4)(m^2 + 2m + 4)
Click here to see answer by rfer(16322)

Question 883422: i need to simplify the following expressions
(x^2 + 3x -9) + (-4x^2 + 2x - 3)
(x - 2) (3x + 5)
Please help
Click here to see answer by rfer(16322)

Question 883850: factorize x2+5x-6
Click here to see answer by Alan3354(69443)

Question 884355: Two private airplanes travel toward each other from cities that are 780 km apart at speeds of 190 km/h and 200 km/h. They left at the same time. In how many hours will they meet?
Click here to see answer by stanbon(75887)

Question 884353: Together, a 20 fluid ounce Coca-Cola and a 20 fluid ounce Pepsi contain 34 teaspons of added sugar. The Coca-Cola contains 1 tsp less of added sugar than the Pepsi. (Source: Nutrition Action HealthLetter, January/February 2010) Find the amount of added sugar in each type of soft drink.
Click here to see answer by josgarithmetic(39623)

Question 884354: The owner of The Daily Grind coffee shop mixes French roast coffee worth $9.00 per pound with Kenyan coffee worth $7.50 per pound in order to get a 10 pound mixture worth $8.40 per pound. How much of each type of coffee was used?
Click here to see answer by josgarithmetic(39623)

Question 884480: Evaluate the expression: [(7 x 6) + 15]2 + 8

Click here to see answer by josgarithmetic(39623)

Question 885353: Simplify the expression (-5)^4(-3)^9/(-5)^6(3)^7
Click here to see answer by Tatiana_Stebko(1539)

Question 885349: Which statement most accurately explains why x^5/x^2 is equal to x^3
Click here to see answer by Theo(13342)

Question 885352: Simplify the expression 4^5-x^4y^9/4^7-x^5y^7
Click here to see answer by Tatiana_Stebko(1539)

Question 885348: the volume of a cylinder is found using the formula v=πr2h, where r is the radius of the base and h is the height. The volume of a rectangular prism of the same width (2r) and height h, as the cylinder, is found by multiplying the area of the base (2rx2r) by the height. What is the ratio of the volume of the cylinder to the volume of the prism?
Click here to see answer by Theo(13342)

Question 885350: Evaluate the expression x^2 y^8/x^7y^6 if x=-2 and y=4
Click here to see answer by ewatrrr(24785)

Question 885445: The difference between the product of five and a number and twice the number. let x=a number
Click here to see answer by ankor@dixie-net.com(22740)

Question 885895: Find a number such that one-half of the number is 12 less than two-thirds of the number.
Click here to see answer by rfer(16322)

Question 886342: (4^6)(-9)
Click here to see answer by jim_thompson5910(35256)

Question 886739: I would like to see the steps to solve this: 7/b+b/x/(2/b) when x=7 and b=4
Click here to see answer by josgarithmetic(39623)

Question 886739: I would like to see the steps to solve this: 7/b+b/x/(2/b) when x=7 and b=4
Click here to see answer by MathTherapy(10555)

Question 886870: {Colours in our national flag}

Click here to see answer by Alan3354(69443)

Question 886919: Factor (x+6)^3 - (y-2)^3 completely.
Click here to see answer by Alan3354(69443)

Question 886930: 2/3x^2 + x - 1, x = 1/2
2/3 (1/2)^2 + 1/2 - 1
I used the website and got the answer of .3333333, but I'm not sure why or how that is the answer? I'd appreciate any guidance...
Thanks!
Scott
Click here to see answer by josgarithmetic(39623)

Question 887617: 14rs - 2rs + 7rs
Click here to see answer by Fombitz(32388)

Question 887903: Evaluate the expression for the given value of the variable(s).
-x^2 - 4x; x = �3
Click here to see answer by nerdybill(7384)

Question 888062: q+r/q+p
Click here to see answer by Alan3354(69443)

Question 888048: (3/4+2/3)+(1/2-1/3)
Click here to see answer by Alan3354(69443)

Question 888174: Please help me to sloved this algebraic expression.
(a b)(2a-3b c)-(2a-3b)c
Click here to see answer by Alan3354(69443)

Question 888328: what is an expression that is equivalent to -2(x-3)

Click here to see answer by Alan3354(69443)

Question 888492: the problem is:
3*-6-(-1-(-4+4(-1-2)))
This is my work...
3*-6-(-1-(-4+4(-1-2)))
3*-6-(-1-(-4+4(-3)))
3*-6-(-1-(-4-12))
3*-6-(-1-(-16)
3*-6-(15)
3*-6(-15)
3(90)
= 270
I got 270 as my answer, however im not sure if I got the answer correctly or if the answer is correct. what im mostly confused about is when and if to drop the parenthesis; or to keep the parenthesis and distribute the number or sigh in front of it.For example...
3*-6-(15) <--- would I drop the parentheses around the 15, or distribute the negative to get...
3*-6(-15) <--- then would I drop these parentheses or multiply the -6 and -15 together?
I really need help understanding this. please and thankyou!
Click here to see answer by richwmiller(17219)

Question 888833: greatest common factor of (30v^2 u^5 w^4) and (20v^3 w^7)
Click here to see answer by Theo(13342)

Question 888921: evaluate the following algebraic expression for the given values of the variables 3xy + 2(x^2 + y^2) for x = 7 and y = 2
Click here to see answer by Fombitz(32388)

Question 889056: When the expression x^4+7x-3x^2-x^3 is written with terms in descending order (from highest to lowest), which list represents the coefficients of the term?
A. 1,-3,-1,7
B. -1,1,-3,7
C. 1,-1,-3,7
D. 1,1,3,7
Click here to see answer by Fombitz(32388)

Question 889164: i need help describing and correcting the error
(3/x) + 6/(x+3)=8/(x+1)
LCD=x(x+3)(x+1)
3(x+3)(x+1)=6x(x+1)=8
3(x^2+4x+3)+6x^2+6x=8
3x^2+12x+9+6x^2+6x=8
9x^2+18x+1=0

Click here to see answer by Fombitz(32388)

Question 889230: please help me write this expression in the associative property: (43*120)+[43*(-20)]
Click here to see answer by stanbon(75887)

Question 889770: 4a^2+2a+4a^2-5
Click here to see answer by Alan3354(69443)

Question 890365: Evaluate the expression:
Problem: 8 3/7 - 2 1/2
Work so far: 59 / 7 - 5/2
? /14 - ?/14
Click here to see answer by Alan3354(69443)

Question 890599: `If x�y=7 and xy=6 then find the value of x^4+1/x^4
Click here to see answer by JulietG(1812)

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