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Quadratic_Equations/346128: How do I solve this quadratic equation? x^2-5x-14=0 1 solutions Answer 247497 by Fombitz(13828)   on 2010-09-21 11:10:35 (Show Source): You can put this solution on YOUR website! Factor, Two solutions: . . .

Graphs/346099: find the x-intercept: -2x^2-16x+24 1 solutions Answer 247496 by Fombitz(13828)   on 2010-09-21 11:09:13 (Show Source): You can put this solution on YOUR website! Use the quadratic formula, . . .

test/346103: 1 over 25 parenthasis to the 1over 2 power....simplify 1 solutions Answer 247495 by Fombitz(13828)   on 2010-09-21 11:05:42 (Show Source): You can put this solution on YOUR website!

Polynomials-and-rational-expressions/346111: Please help me solve ((( y^2+10y+25/y^2-9 * y+3/y+5 ))) 1 solutions Answer 247494 by Fombitz(13828)   on 2010-09-21 11:04:53 (Show Source): You can put this solution on YOUR website!

Vectors/346121: 1 solutions Answer 247493 by Fombitz(13828)   on 2010-09-21 11:02:32 (Show Source): You can put this solution on YOUR website! Please repost.

Complex_Numbers/346123: 2+8i/5+i 1 solutions Answer 247492 by Fombitz(13828)   on 2010-09-21 11:02:07 (Show Source): You can put this solution on YOUR website!

Mixture_Word_Problems/346125: a chemist needs 110 milliliters of a 46% solution but has only 40% and 73% solutions available. Find how many mililiters of each that should be mixed to get the desired solution. 1 solutions Answer 247491 by Fombitz(13828)   on 2010-09-21 10:59:39 (Show Source): You can put this solution on YOUR website! Let be the amount of 40% solution. Let be the amount of 73% solution. . . Total volume equation: 1. . . Concentration equation: 2. From eq. 1, Substitute into eq. 2, ml Then from eq. 1, ml

Vectors/346124: Solve the problem: Find the inner product of the vectors <2,5> and <4, -2>. Then state whether the vectors are perpendicular or not. 1 solutions Answer 247490 by Fombitz(13828)   on 2010-09-21 10:55:44 (Show Source): You can put this solution on YOUR website! A:(2,5) B:(4,-2) . . . . . . No, if they were perpendicular, the dot product would equal zero.

Finance/346122: Please help :c) At an interest rate of 10%, what is present value of $1m to be received in: 150 years? 1 solutions Answer 247489 by Fombitz(13828)   on 2010-09-21 10:54:24 (Show Source): You can put this solution on YOUR website! 62 cents invested at 10% for 150 years will yield $1,000,000. Save your pennies.

Equations/346104: Subtract. Simplify if possible 20/y - 5 - 20/5 - y 1 solutions Answer 247488 by Fombitz(13828)   on 2010-09-21 10:51:50 (Show Source): You can put this solution on YOUR website!

Age_Word_Problems/346107: 3(x-4)-7(x+2)=-2(x+18) I have worked on this problem for about an hour I know that the - is messing me up but I cannot figure it out. the answer is 5 but I need to know the process so that I can apply to my other problems thanks so much 1 solutions Answer 247487 by Fombitz(13828)   on 2010-09-21 10:50:15 (Show Source): You can put this solution on YOUR website! Take it from there and solve for . Also make a note on where you made your mistakes in your previous attempts for future problems.

test/346110: (-64)1/2 power 1 solutions Answer 247485 by Fombitz(13828)   on 2010-09-21 10:48:31 (Show Source): You can put this solution on YOUR website! where

test/346113: (10,000)1/4 power...simplify 1 solutions Answer 247484 by Fombitz(13828)   on 2010-09-21 10:47:15 (Show Source): You can put this solution on YOUR website!

absolute-value/346120: How do I find the absolute value of this problem: |5-12| I had -7, but my teacher told me it was wrong. 1 solutions Answer 247483 by Fombitz(13828)   on 2010-09-21 10:46:14 (Show Source): You can put this solution on YOUR website! The absolute value function always delivers a non-negative answer.

Geometry_proofs/346119: Given: l is parallel to m Prove: the measurement of angle 4 + measurement of angle 5= 180 degrees Show the statements and reason 1 solutions Answer 247482 by Fombitz(13828)   on 2010-09-21 10:45:24 (Show Source): You can put this solution on YOUR website! What's angle 4 and 5 in relation to lines l and m? Or if you have a diagram you could post it online.

test/346115: (16apower4)power1/4 1 solutions Answer 247481 by Fombitz(13828)   on 2010-09-21 10:44:29 (Show Source): You can put this solution on YOUR website! To show exponentiation, use the caret ^. Example, x^2= (16a^4)^1/4= (16a^4)^1/4= (16a^4)^1/4= (16a^4)^1/4=

Matrices-and-determiminant/346098: I need to find the intersecting points of two equations: y=.15x and y=.2(x-20)and graph them. I have included my problem and what is expected. I'm lost. Ok this is what I got : You would set the two equations equal to each other and solve for x .15x=.2(x-20) using the Elimination Method Reorder the terms: 0.15x = 0.2(-20 + x) 0.15x = (-20 * 0.2 + x * 0.2) 0.15x = (-4 + 0.2x) Solving 0.15x = -4 + 0.2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2x' to each side of the equation. 0.15x + -0.2x = -4 + 0.2x + -0.2x Combine like terms: 0.15x + -0.2x = -0.05x -0.05x = -4 + 0.2x + -0.2x Combine like terms: 0.2x + -0.2x = 0.0 -0.05x = -4 + 0.0 -0.05x = -4 Divide each side by '-0.05'. x = 80 Simplifying x = 80 Now that X = 80, I plugged it into the equation y=0.15x and got this: y=0.15x y=0.15(80) y= 12 Now this is the question to my problem and I do not know how to get the answer. I have to graph this and show the intersection. a teacher is looking for the best option in purchasing school supplies for a classroom. Where Company A is offering a discount for every dollar amount spent on school supplies and where Company B is offering a higher discount than Company A, but the discount for Company B is only offered for every dollar amount spent above $20.00. I will determine and explain which company will offer a better price based upon the dollar amount the teacher spends on school supplies. Option 1- Company A will offer her a 15% discount on the total amount spent in the store. Option 2- Company B will offer her a 20% discount on the remaining amount after the first $20 is spent. Depict the situation graphically, using appropriate graphing software such as Excel or an online graphing utility. Include the following in your graph: • A depiction of each cost option on the same graph • Clear labels of the cost to the hypothetical customer for both options on the graph • The intersection of the cost options (if one exists) I'm so lost. I do not know how to graph this. Please help if you can. 1 solutions Answer 247480 by Fombitz(13828)   on 2010-09-21 10:41:46 (Show Source): You can put this solution on YOUR website! First your answer is correct. Now plotting. When , when , . . . Plot the points and the line connecting them. The x-axis is the amount of money you spend. The y-axis is the discount you receive. . . . The red line is the savings from the Company A plan. . . . The Company B savings only begins at . So you have to spend at least $20 to receive any discount. When , When , Plot those points and line. . . . The blue line is the savings from the Company B plan. . . . When does the Company B plan savings equal the Company A plan savings. You already calculated that point. . . . When you spend $80, you get a savings from both plans of $12. Plot that point too. . . . . . . Once you pass that point ($80), Company B savings (blue line) are higher than Company A. . . . If you spend less than $80, Company A savings (red line) are higher than Company B.

Expressions-with-variables/345774: Kim and Dustin together have 96 cards, Dustin and Mike together have 93 cards, and Kim and Mike together has 81 cards. How many cards does each person have? 1 solutions Answer 247478 by Fombitz(13828)   on 2010-09-21 10:24:24 (Show Source): You can put this solution on YOUR website! 1. 2. 3. Subtract eq. 3 from eq. 1, Add that to eq. 2, Then from eq. 1, From eq. 3,

Equations/346093: solve: sqrt(3-x)= -4 If you can could you also include you how you found the answer. 1 solutions Answer 247477 by Fombitz(13828)   on 2010-09-21 10:19:02 (Show Source): You can put this solution on YOUR website! Square both sides.

Percentage-and-ratio-word-problems/346091: if you borrowed money at 15% simple interet after paying it off in one year your finally payoff was $1199.45 what was the original amount borrowed? 1 solutions Answer 247476 by Fombitz(13828)   on 2010-09-21 10:17:43 (Show Source): You can put this solution on YOUR website! The original amount borrowed was $1043.

Rational-functions/346085: v/14 - v/49 = 1/14 solve what is the solution for v? 1 solutions Answer 247475 by Fombitz(13828)   on 2010-09-21 10:16:30 (Show Source): You can put this solution on YOUR website! Multiply both sides by . Now solve for

Exponents/346089: divide and simplify z^2 -81/ z divided by z-9/z+2 = 1 solutions Answer 247474 by Fombitz(13828)   on 2010-09-21 10:14:32 (Show Source): You can put this solution on YOUR website! . .

Equations/346087: how many real solutions does x^4=7 have? 1 solutions Answer 247473 by Fombitz(13828)   on 2010-09-21 10:12:34 (Show Source): You can put this solution on YOUR website! 2 real solutions, and 2 complex solutions, and

Exponents/346086: What is the answer for this: x^-2+y^-2/(xy)^-2 1 solutions Answer 247471 by Fombitz(13828)   on 2010-09-21 10:10:30 (Show Source): You can put this solution on YOUR website! You mean you want to simplify the expression? . . .

test/345776: Please help solve a(x+b) = c; 2(x+1)=9 1 solutions Answer 247470 by Fombitz(13828)   on 2010-09-21 10:07:37 (Show Source): You can put this solution on YOUR website! I assume for x? . . . . . .

Exponential-and-logarithmic-functions/345656: 25^10x+8=(1/125)^4-2x 1 solutions Answer 247469 by Fombitz(13828)   on 2010-09-21 10:05:33 (Show Source): You can put this solution on YOUR website!

Inequalities/345800: Solve and graph the following inequality: 5-(x-3),13 1 solutions Answer 247468 by Fombitz(13828)   on 2010-09-21 10:02:10 (Show Source): You can put this solution on YOUR website! Your inequality is incomplete. Please repost.

Expressions-with-variables/345731: Find the LCM of 16x^2 y^5 z^4 and 21xy^3z^2 1 solutions Answer 247467 by Fombitz(13828)   on 2010-09-21 10:01:17 (Show Source): You can put this solution on YOUR website! Now find the factors in common and the largest exponent in common.

Linear-equations/346082: How do I find the intersecting points of y=.15x and y=.2(x-20). do I set my problem up like .15x=.2(x-20) 1 solutions Answer 247465 by Fombitz(13828)   on 2010-09-21 09:58:58 (Show Source): You can put this solution on YOUR website! Yes, that's exactly how. Then once you find , use either equation to solve for

Travel_Word_Problems/345703: An airplane flying at 450 miles/hr due south experiences a westerly wind of 75 miles/hr. What is the actual velocity? 1 solutions Answer 247464 by Fombitz(13828)   on 2010-09-21 09:58:13 (Show Source): You can put this solution on YOUR website! Let North be positive , East be positive . The plane is traveling (,). The wind is blowing (,). The actual plane velocity is, (,)+(,)=(,) . . . mph . . . degrees West of South.

Graphs/345691: find the slope for a line that passes through the points (-1,6) and (4,10). 1 solutions Answer 247463 by Fombitz(13828)   on 2010-09-21 09:51:54 (Show Source): You can put this solution on YOUR website! Complete the calculation for the final answer.