# Questions on Algebra: Systems of Linear Equations answered by real tutors!

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 Question 684362: how do you solve for H in this problem? -2(h-7)=-28 Click here to see answer by ReadingBoosters(3246)

 Question 684386: when graphing y < -6 should the region below the y = - 6 be shaded or should the region above the line y = - 6 be shaded Click here to see answer by ReadingBoosters(3246)

 Question 684714: n2-2n-3=0 Click here to see answer by jim_thompson5910(29613)

 Question 684766: How do you solve this system of equations using substitution (not elimination): 5x - 9y = 11 and 3x + 7y = 19. Please show me the step-by-step solution, as I would appreciate this very much. I tried doing this problem numerous times, but my solutions didn't make sense. I have a test soon, and I am worried I'll not be prepared. Click here to see answer by ReadingBoosters(3246)

 Question 684937: Solve the system of linear equations by graphing 2x-y=0 4x-y=6 Click here to see answer by MathLover1(7480)

 Question 685128: qual é o resultado da -5x-2(-3x-4)=-5x-2 Click here to see answer by MathLover1(7480)
 Question 685128: qual é o resultado da -5x-2(-3x-4)=-5x-2 Click here to see answer by funmath(2926)

 Question 685153: Can you help me solve this problem? 4(2x-5)+3=5(4x-1)-10x Click here to see answer by rfer(13569)

 Question 685215: x^2+y^2=22 x+y=1 Click here to see answer by pmatei(79)

 Question 685486: please help me solve this problem: x+3y=11 4x+y=6 using (3,-6) may you determine if the given ordered pair is a solution to the linear equations and explain why. please and thank you Click here to see answer by mananth(13129)

 Question 685506: y=-x I know the answer however I do not how to solve it Click here to see answer by jim_thompson5910(29613)

 Question 685701: -3x+5y=-5 graphing the linear equation by solving for y first What are the line coordinates and how do I check my work Thank you for your help. gibbyjsb22 Click here to see answer by mananth(13129)
 Question 685701: -3x+5y=-5 graphing the linear equation by solving for y first What are the line coordinates and how do I check my work Thank you for your help. gibbyjsb22 Click here to see answer by ReadingBoosters(3246)

 Question 685830: You invested a total of \$11,200 in shares of the three stocks at the given prices, and expected to earn \$304 in annual dividends. If you purchased a total of 250 shares, how many shares of each stock did you purchase? Price / Dividend Yield GE(general electric) \$16 7% WMT(Walmart) \$56 2% XOM(Exxon Mobile) \$80 2% Click here to see answer by MathTherapy(1817)

 Question 686149: the school purchased baseball equipment and uniforms for a total cost of \$1762.The equipment costs \$598 and the uniforms were \$24.25 each.How many uniforms did the school purchase Click here to see answer by randyjoseph7(13)

 Question 686310: Disregard Click here to see answer by atswinney(1)

 Question 686473: This is about Gauss/Jordan Elimination.What are the value of x,y,w and z in the given equation: x+2y-w+z=9 2x-y+2w+3z=-3 3x+y+w-z=-4 x-y-3w+z=4 Click here to see answer by Edwin McCravy(9719)

 Question 686517: A total of tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was two times the number of adult tickets sold . How many adult tickets were sold? Click here to see answer by rfer(13569)

 Question 686715: I need help putting the below equation into slope-intercept form: y + 4 = -8/5(x-3) *the -8/5 is meant to be read as - eight fifths Thank you! Brayden Dickey Click here to see answer by jim_thompson5910(29613)

 Question 686850: what is 2x+3y=5 Click here to see answer by jim_thompson5910(29613)

 Question 686974: I don't understand how to find the factors for this equation : 4x to the second power + 10x + 4= The answer is 2(2x to the second power + 5x + 2) = 2(2x + 1)(x+2) I understand the first problem, but I don't see the 10x in the final solution. I don't understand why this is the answer. Click here to see answer by Stitch(415)

 Question 687016: Two of the top grossing concert tours were by a jazz band and a rock band. Together, the two tours visited 172 cities. The jazz band visited 94 cities more than the rock band. How many cities did each group visit. Click here to see answer by lynnlo(4174)

 Question 687304: Please help me solve this: 3x-y=11 x+y=5 in elimination and substitution method. Click here to see answer by stanbon(60778)

 Question 687661: Solve and check the linear equation. 0.08(50) + 0.40x = 0.20(50 + x) Click here to see answer by MathLover1(7480)

 Question 687692: Sketch the region the region that corresponds to each inequality. Then use your graph to determine if (3,-2)is a solution to the inequality and explain : A) X- 3Y >/ 3 B) X /< -2 >/ MEANING GREATER THAN OR EQUAL TO /< LESS THAN OR EQUAL TO Click here to see answer by stanbon(60778)

 Question 687688: Is c=0.05m+20 a linear equation? Click here to see answer by MRperkins(300)

 Question 687726: Express the following as single fraction in it's simplest form. 3x/4+2(1-3x)/5 Click here to see answer by josh_jordan(118)

 Question 687858: A is 20years older than b.5years ago,a was 3 times as old as b.find their present ages. Click here to see answer by stanbon(60778)

 Question 687997: Hi I need answers for this problem. 3a+4b=2 -3a+b=23 Click here to see answer by lwsshak3(7679)

 Question 688078: 2x+3(5x -7) = 4x+5 Click here to see answer by rfer(13569)

 Question 688223: graph and use the slope & y intercept x+5y=10 Click here to see answer by stanbon(60778)

 Question 688349: Please help me solve this system by substitution? { 2x - y = 4 { y = 2x - 4 Click here to see answer by MathLover1(7480)

 Question 688466: Sean is sending a text message to a friend.The function y=6 - x/5 represents the number of words y the message can hold after he types x words.Find the zero and explain what it means in the context of this situation. Click here to see answer by ReadingBoosters(3246)

 Question 688640: I am having trouble using the substitute method to solve the simultaneous equation: y=5x+3 y=2x-9 I have tried to substitute variable y of the second equation into first: 2x-9=5x+3 And then solve for x, but I'm not getting the right answer? Please could you explain what I am doing wrong and how I should be doing it. Click here to see answer by ReadingBoosters(3246)

 Question 688927: how do you solve 2x-3y=-1 when y=x-1 Click here to see answer by jim_thompson5910(29613)

 Question 689000: Can you help me ? x+y=525 4x+6y=2876 Click here to see answer by ReadingBoosters(3246)

 Question 689494: -4.9r(2) +t +350 Click here to see answer by lynnlo(4174)

 Question 689486: what is the value of x in the equation 4(2x+1)=27+3(2x-5) Click here to see answer by checkley79(3056)

 Question 689340: Please help me solve this question: If a car traveled 5kilometer an hour faster it would take one hour less to travel 210 km. what is the speed of the car and what time does it take? Thank you, Click here to see answer by ankor@dixie-net.com(16527)

 Question 689989: For f(x)=x^2+3x and g(x)=x-2 find f(g(x)). Click here to see answer by stanbon(60778)

 Question 690050: -1n - 24 = 5 - n Click here to see answer by stanbon(60778)

 Question 691201: I need help solving this equation using the elimination method: x+6y=79 x-4y=-41 Click here to see answer by ankor@dixie-net.com(16527)
 Question 691201: I need help solving this equation using the elimination method: x+6y=79 x-4y=-41 Click here to see answer by ReadingBoosters(3246)