# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 81470: the sum of two numbers is 23.twice the larger number is 4 more than 4 times the smaller.what are the numbers? Click here to see answer by praseenakos@yahoo.com(507)

 Question 81467: write each as an equation with x as the unknown number. A. the cost of 3 pizzas if each costs \$6.00 Click here to see answer by tutor_paul(493)

 Question 81473: a sumbmarine is 450 meters below sea level. An airplane is 832 meters above sea level. what is the total distance the plane and the submarine? Click here to see answer by tutor_paul(493)

 Question 81452: Solve the system by substitution. 3x – y = –7 x + y = –9 Click here to see answer by mathdoc316(9)

 Question 81531: 6th grade homework problem but not from a textbook. We have to show all work on a seperate piece of paper and it's the first time all of us have seen it. Question is: If M+L=10.6 and S+L=8.5 and S+M=6.1 then what is the weight of S, M and L? Thanks! Click here to see answer by rapaljer(4670)

 Question 81439: Write the equation of the line with slope -1/2 and y-intercept (0, 3). Click here to see answer by scott8148(6628)

 Question 81566: Determine which two equations represent perpendicular lines y=3x-7, y=1/3x+7, y=-1/3x+7, y=1/3x-7 Click here to see answer by tutorcecilia(2152)

 Question 81584: Which of the following is an equation of the line passing through (-2,4) and (6,0)? A. y= 1/2x + 3 B. y= -1/2x + 3 C. y = -2x + 3 D. y = -1/2x + 6 Click here to see answer by tutorcecilia(2152)

 Question 81571: Hi, here's the question.. Using the zero method, solve the equation graphically. 9x+7+5x+1=13x+17 Basically, what I think they're asking is 'solve for x.' Thank in advance. Click here to see answer by vertciel(183)

 Question 81598: -1/3x + 7 = 16, what is the value of 2x + 1? A. -5 B. -27 C. -53 D. -137 Click here to see answer by bucky(2189)

 Question 81594: Find the diameter of a circle if the circumference is 28 cm? Click here to see answer by checkley75(3666)

 Question 81592: find two numbers whose sum is 22 and whose difference is 5? Click here to see answer by checkley75(3666)

 Question 81591: Write the following statements in standard mathematical shorthand: 3 Time the number P, minus 4 times the number q is always greater than or equal 22 Click here to see answer by checkley75(3666)

 Question 81474: What two integers have a product of 64 and a sum of -20? Click here to see answer by checkley75(3666)

 Question 81469: a sumbmarine is 450 meters below sea level. An airplane is 832 meters above sea level. what is the total distance the plane and the submarine? Click here to see answer by checkley75(3666)

 Question 81624: can i get help to solve this and simplify 2 + 22 · 19 + 6 and one more 5m + 4 = 24; 4 is it a solution or not a solution? thanks Click here to see answer by rajagopalan(158)

 Question 81593: The perimeter of reqular pentagon is 22 centimeters. How long is one side? Click here to see answer by praseenakos@yahoo.com(507)
 Question 81593: The perimeter of reqular pentagon is 22 centimeters. How long is one side? Click here to see answer by rajagopalan(158)

 Question 81631: write the equation of the line that passes through point (0,7) with a slope of -5 Click here to see answer by chitra(359)

 Question 81655: I am sorry I have to keep asking the same questions but I lost a lot of saved materials during the storm we had in Dallas, Texas that knocked out our power for 4 days. Please help me with this one Write the equation of the line passing through (-3,-5) and (3,0) Click here to see answer by tutorcecilia(2152)

 Question 81673: Story Problem: My initial investment is \$4000.00 and is componded quarterly at 6.25% . How long will it take to double my money ? Click here to see answer by stanbon(60771)

 Question 81418: I am suppose to decide all values of b in the following equations that will give one or more real number solutions. Please help me I am lost? (a) 3x^2 + bx - 3 = 0 (b) 5x^2 + bx + 1 = 0 (c) -3x^2 + bx - 3 = 0 (d) Write a rule for judging if an equation has solutions by looking at it in standard form. Click here to see answer by ankor@dixie-net.com(16523)

 Question 81694: How do I solve the system by addition? 5x – 3y = 13 4x – 3y = 11 Click here to see answer by scott8148(6628)

 Question 81690: I am so lost on this one, how do I solve? 10x – 4 – 5x = 6 + 3x – 8 Click here to see answer by checkley75(3666)
 Question 81690: I am so lost on this one, how do I solve? 10x – 4 – 5x = 6 + 3x – 8 Click here to see answer by scott8148(6628)

 Question 81710: How do I solve x/3 - 1/4 that will equal to 3x - 8/12 This is something that has had me lost like forever! Can someone please help me out!! Click here to see answer by rapaljer(4670)

 Question 81745: Rewrite the equation –2x – 5y = –40 as a function of x. Click here to see answer by rapaljer(4670)

 Question 81728: Rewrite the equation –2x – 5y = –40 as a function of x. Click here to see answer by bucky(2189)

 Question 81719: Rewrite the equation y = 4x + 1 as a function of x. Click here to see answer by bucky(2189)

 Question 81770: How do I subtract and solve 2x – 3x2 + 5x3 from 5x3 + 4x – x2? Click here to see answer by bucky(2189)

 Question 81790: The area of a square is square inches. What is the length of the side of the square? Click here to see answer by stanbon(60771)

 Question 81797: Solve by taking the square root of each side. Click here to see answer by stanbon(60771)

 Question 81789: The area of a square is square inches. What is the length of the side of the square? Click here to see answer by stanbon(60771)

 Question 81781: Find the product. Not in the book. Could you please show me the work so I will have examples to go by? (p-3)(p+5) and (a+2)(a^2-3a-7) Click here to see answer by stanbon(60771)