| Subject | Date Asked | Expert |
|
| Subitution Math Problem | 11/6/2009 | Lynn Houston |
Q: What are the steps to this substitution y=9x-28 8x-3y=27
A: You take the value of y, which is 9x-28 and you fill that into the second equation for y. 8x - ...
|
| 5th grade Applications Problem | 11/5/2009 | Lynn Houston |
Q: Please help me solve this multiquestion problem Table: 2003-2004 Season Player Averages ...
A: PaRKER SCORED 14 PTS per game, so pts for the season would be 102 * 14 = 1428 The team scored 45 ...
|
| Fractions | 11/5/2009 | Josh |
Q: 2/3 of Mary’s age equals Sarah’s age and 3/4 of Ruth’s age equals Sarah’s age. If the total ages ...
A: Kenneth, The usual way to navigate such a problem is by using linear algebra. This will tell us if ...
|
| Elimination and Substitution | 11/5/2009 | Lynn Houston |
Q: How to solve an equation that has 3 different variables 2a+c=-10 b-c=-15 a-2b+c=-5
A: Take the equations with only 2 variable and solve them for a and b, then fill those values into the ...
|
| Fraction Question | 11/5/2009 | Josh |
Q: By looking at the denominator and the numerator how can you tell if the fraction is greater or less ...
A: There are several ways to answer this question. The best answer for you would depend on your ...
|
| help | 11/5/2009 | Lynn Houston |
Q: if tony climbs 3 1/2 meters per minute. how many meters did he climb in 2 1/4 minutes ? the answer ...
A: 3 1/2 = 3.5 (1 divided by 2 = .5) and 2 1/4 = 2.25 (1 divided by 4 = .25) so, to find out how many ...
|
| math crap | 11/4/2009 | Lynn Houston |
Q: i dont understand my teacher goes way to fast. 2/3V=14 solve V. What do i do?!?!?!?!?!?!
A: When you're solving for a variable, you have to isolate the variable and in order to do that, you ...
|
| simultaneous linear equations | 11/4/2009 | Josh |
Q: y = 2x+3 y = 5x-3 how do i solve this to get x=2 and y=7 and y = 3x -1 ...
A: Given two equations with two unknowns, we can use elimination and back-substitution to find the ...
|
| completing the square in quadratic equations | 11/4/2009 | Josh |
Q: out of 50 questions,these three i had a problem with. Can you help me with solving for x,in steps ...
A: "Completing the square" may not be the easiest way of finding the answer to these quadratic ...
|
| question | 11/3/2009 | Josh |
Q: How can i solve mathematical problems...involving fractions , ratios and also trigonometric problems ...
A: Since you did not mention your school level, it is rather difficult for me to address your specific ...
|
| urgent math | 11/3/2009 | Josh |
Q: Hey there I have a test tomorrow nigh for Calc and I just can't seem to get the answers for these ...
A: It is always stressful having so many unanswered questions the day before an exam. Let's see if we ...
|
| natural log question | 10/28/2009 | Josh |
Q: My equation is reduced to 4ln(600/P)=ln(75,000/P). I need to isolate the P but the 4 in the ...
A: For any constant "a" and positive real-valued number "x", a*log(x) = log(x^a). e.g., you can verify ...
|
| 8th grade pre algebra multi-step equations | 10/27/2009 | Lynn Houston |
Q: I really don't under stand multi-step equations can you help? MY problems are 1.)-15-6c+3b-6+9+2a ...
A: All they want is for you to combine all like terms. That means add or subtract all a's, b's, c's, ...
|
| solveing linear equations | 10/26/2009 | Lynn Houston |
Q: can you please show me in steps, as each time i do these, i get a different answer :-( 1. 5+ ...
A: The easiest way to handle these is to start by getting rid of the fractions. To do that, multiply ...
|
| Inequality word problem | 10/24/2009 | Josh |
Q: Earthquake victims in China need medical supplies and bottled water. Each medical kit measures 1 ...
A: Let "m" be the number of medical kits, "w" the number of water containers. There are two separate ...
|
| substitution and elimination | 10/24/2009 | Lynn Houston |
Q: i really need help with substitution and elimination!!pls help me: 1) X+5Y-26=0 3X+2Y=0 ...
A: SOLVE 1ST EQUATION BY ELIMINATION. 1) X+5Y-26=0 3X+2Y=0 Multiply the first eq by -3 ...
|
| solve for X & solve inequality | 10/22/2009 | Lynn Houston |
Q: solve for X. 3+1/x+1 = 4x/x-1 solve the inequality 2x²-x>6 ANSWER: solve for X. 3+1/(x+1) = ...
A: I meant, both sides of the eq, meaning, the part to the right of the = sign and the part to the ...
|
| simplify expressions | 10/22/2009 | Lynn Houston |
Q: a) 5 + 2(x + 1) my answer 7x+7 book 7 + 2x b) 3x + 4(2x − 1) my answer 6x^2+5x-4 ...
A: a) 5 + 2(x + 1) my answer 7x+7 book 7 + 2x 5 + 2x + 2 7 + 2x b) 3x + 4(2x − 1) my ...
|
| Algebra | 10/22/2009 | Josh |
Q: Marco is draining his two aquariums. The tank are the same size. One tank has 7in. Of water in it. ...
A: Ivory, The amount of water which has been drained at any point in time is given by: R*T, where R is ...
|
| solve for X & solve inequality | 10/21/2009 | Lynn Houston |
Q: solve for X. 3+1/x+1 = 4x/x-1 solve the inequality 2x²-x>6
A: solve for X. 3+1/(x+1) = 4x/(x-1) (multiply both sides by (x+1)(x-1) (3+1)(x-1) = 4x(x+1) Multiply ...
|
| Math Problem"chances" | 10/20/2009 | Lynn Houston |
Q: Need help - how do we solve this problem? The names of al the white notes on a piano are written on ...
A: There are 7 each of D, E, F & G for a total of 28 pieces of paper 8 each of A, B, C, for a total of ...
|
| slope-intercept | 10/19/2009 | Josh |
Q: Write the slope-intercept form for an equation of the line perpendicular to the graph of the given ...
A: The slope-intercept form for a straight line equation is y=s*x+b. Parameters: s represents the ...
|
| question | 10/19/2009 | Josh |
Q: I lost my job about a year ago and just simply cannot find a job. I have decided to go back to ...
A: From the information you have given, 21 cents does not seem to be the right answer. Clearly, ...
|
| another question | 10/19/2009 | Lynn Houston |
Q: determine the slope intercept form of the linear equation if passes through (7,2) and is ...
A: a) x=7 is a vertical line which has no slope. to be perpendicular, the line must be a horizontal ...
|
| difficult question for me | 10/19/2009 | Lynn Houston |
Q: determine the slope intercept form of the linear equation if passes through (7,2) and is parallel to ...
A: slope intercept is y = mx + b, where m = slope and b = y intercept. A) x = 7 is a vertical line ...
|
| word problem | 10/18/2009 | Josh |
Q: This problem from my real estate study guide is worded poorly. " A salesperson's compensation is ...
A: This pretty much works in the same way as the tax system. First, the commission earned by the ...
|
| Math grade 6 | 10/17/2009 | Lynn Houston |
Q: We need help with equations using letters. 50 =x/ 10. We know how to do + and - but how do you do ...
A: The secret to any of these is that you have to "undo" everything that is done to the variable that ...
|
| supernova 1054 a.d. chinese | 10/14/2009 | Josh |
Q: In a.d. 1054, chinese astronomers observed the light from a supernova in the night sky. This ...
A: Here is a simplistic view of the problem, assuming that Crab Nebula is stationary relative to the ...
|
| reciprocals | 10/14/2009 | Lynn Houston |
Q: i would like to know what a reiprocal is and how it works with decimals
A: A reciprocal is a number that you multiply by so that the result equals 1. The easiest way to find ...
|
| algebra 3 | 10/13/2009 | Josh |
Q: i need help on this problem.dont understand where to start x^3+6x^2-4x-24=o finding the real number ...
A: Alexis, This question basically asks us to find all possible values of x which make the equation ...
|
| math | 10/13/2009 | Lynn Houston |
Q: of the three numbers,second is twice the first and is also thrice the third.if the average of the ...
A: the numbers are a, b and c these facts are given in the problem a+b+c/3 = 44 (a+b+c = 132) a = b/2 ...
|
| evaluate the problem | 10/7/2009 | John Zalewski |
Q: Use the descriptive property to evaluate the expression 4 x (80 + 3)
A: Jasmine. According to the order of operations, evaluation of parentheses comes before ...
|
| regrouping-grade 4 homework | 10/6/2009 | John Zalewski |
Q: we are trying to help our daughter with her math homework: the question is "what is the greatest ...
A: Sheila. First of all, the hundreds column is the column to the far left, where the 3 is. The 0 on ...
|
| algibra | 9/30/2009 | Lynn Houston |
Q: how do i find the radius of a sphere with the volume= 4.5pie
A: Volume of a sphere =(4/3)*pi*r3 So just fill in what you know and solve for r (radius) 4.5pi = ...
|
| beginning algebra | 9/30/2009 | Pawan Musale |
Q: It says evaluate each expression if x=-3, y=5and z= 2/3 my question is this: z - z+x divided by ...
A: Jennifer, Please find attached the answer. (Scan quality is not that good, sorry for that) I hope ...
|
| standard form | 9/28/2009 | Lynn Houston |
Q: write each of the following numbers in standard form a.four hundred thirty thousand b.ninety ...
A: write each of the following numbers in standard form a.four hundred thirty thousand 430,000 ...
|
| math | 9/28/2009 | Pawan Musale |
Q: if a + 1/a=3 then the value of a3 + 1/a3(this is a's cube)=
A: Deepika, a+1/a = 3 ------------------ #1 Let us make cube on both sides (a+1/a)^3 = 3^3 ...
|
| equation in standard form using only integers | 9/27/2009 | Pawan Musale |
Q: Is this correct for the following problem x/8 = -4y/5 multiply everything by 40 40x = 160y or x = ...
A: Brady, x/8 = -4y/5 Multiplying both sides by 40 will give, 40 * x/8 = 40 * (-4y/5) 5x = 8*(-4y) ...
|
| Percentages | 9/26/2009 | Pawan Musale |
Q: What percentage is 5.000 of 283.000 and how did you arrive at the answer Thank you
A: Barry, Suppose 5 is 'x' percentage of 283. So write above statement in mathematical form as: 5 = ...
|
| Algebra Equation | 9/24/2009 | Pawan Musale |
Q: How many lines does it take to connect 5 employees? Answer: (5-1)+(5-2)+(5-3)+(5-4)+(5-5)= 10 Find ...
A: Bryan, For 5 employees your equation is: (5-1)+(5-2)+(5-3)+(5-4)+(5-5)= 10 We will re-write this ...
|
