# Questions on Algebra: Equations answered by real tutors!

Algebra ->  Algebra  -> Equations -> Questions on Algebra: Equations answered by real tutors!      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 92612: The kinetic energy of a particle of mass m is found by taking one-half of the product of the mass (m) and the square of the velocity (v). Write an expression for the kinetic energy of a particle. Click here to see answer by stanbon(57387)

 Question 92611: It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living last year, how many species are on Earth this year? Click here to see answer by stanbon(57387)

 Question 92610: The quotient when 3 more than a number is divided by 3 less than that same number Click here to see answer by stanbon(57387)

 Question 92623: I am trying to simplify this problem, I am assuming the denominator cannot equal zero. (5/x)-(3/(x+5)) Click here to see answer by stanbon(57387)

 Question 92672: Hi! My name is Gabby and here's my question: Solve: I tried to solve this here's what i did: I got stuck here, i'm not sure what to do next or if i did it right? help please:) Thanks! Click here to see answer by checkley75(3666)

 Question 92675: Hi! Here's my question: Solve: Here's what i did: but i'm not sure if it should be ??? Is it? Click here to see answer by jim_thompson5910(28598)

 Question 92682: Here's my question: Solve: Here's what i did: I can't factor that so i'm stuck what do i do? Click here to see answer by Nate(3500)

 Question 92688: A 2 digit number is 3 more than 7 times the sum of its digits. If the digits are interchange, the new number is 4 more than 5 times the tens digit of the original number.What's the original number? Click here to see answer by ankor@dixie-net.com(15660)

 Question 92708: Here's my question: Solve: |x-5|=10 I'm not sure what to do because i'm not sure what the opposite of absolute value is? help please:) Click here to see answer by stanbon(57387)

 Question 92711: A 2 digit numberis 6 less than 4 times the sum of its digits. If digits are interchange, the new number is 5 less than 8 times the sum of its digits. What's the original number? Click here to see answer by stanbon(57387)

 Question 92712: Here's my question: Solve the inequality: 9x-8<=7x+16 I'm not sure if i can just solve it or if i have to make some kinfd of chart thing i remember doing in algebra class? Click here to see answer by stanbon(57387)

 Question 92800: My car gets 27 miles to the gallon. If gasoline costs \$3.23 per gallon, how far can I drive on \$45.00 worth of gas? I divided 3.23 by 45 getting 13.93. Then Multiplied 1.93 by 27 getting 378 miles as my final answer? Is this correct and did I solve it properly? Thank you!!!! Click here to see answer by bucky(2189)

 Question 92811: X=80,000 Problem is 2,400,000/x-105 Question? How to ge rid of x-105 without multiplying both sides by 1/x-105. I would appreciate any assistance. Thanks. Click here to see answer by stanbon(57387)

 Question 92827: FIND AN X AND A Y THAT MAKS TIS EXPRESSION TRUE Y=4X-3 Click here to see answer by Earlsdon(6287)

 Question 92842: WHAT IS THE VALUE OF 9+6 (6+4) DIVIDED BY 5 Click here to see answer by checkley75(3666)

 Question 92846: add 1 1/2 inches and 26.2 centimeters, and express the result in feet. I have multiplied (.39)(26.2)=10.22 inches add 10.22+1.5 =11.72 This doesnt even make a foot? What did I do wrong? Please help. I really want to understand what to do and if I did any part of this correctly. Thank you so much in advance! Ann Click here to see answer by checkley75(3666)

 Question 92899: Write the equation of the line passing through(-3,-5) and (3,0). Click here to see answer by jim_thompson5910(28598)

 Question 92844: I really need help on this problem. I haven't taken algebra in years so im a little rusty. Q: What is the remainder when x^3+5x^2-6x+10 is divided by x+3? The book says that the answer is 46 but i'm not sure how to get that. Thanks alot. Click here to see answer by scott8148(6628)

 Question 92900: Which of the ordered pairs (3,1), (0,-4), (-4,0), (-3,-7) are solutions for the equation x-y=4? Click here to see answer by chitra(359)

 Question 92901: Write the following phrase using symbols. Use the variable x to represent the number. Eight less than three times a number Click here to see answer by chitra(359)

 Question 92966: Rewrite the equation –7x + 8y = –40 as a function of x. Click here to see answer by jim_thompson5910(28598)

 Question 92968: Solve. –3(x + 2) + 4x = 5x + 18 Click here to see answer by prabhjyot(164)
 Question 92968: Solve. –3(x + 2) + 4x = 5x + 18 Click here to see answer by jim_thompson5910(28598)

 Question 92963: Which of the ordered pairs (0, 0), (–2, 10), (–1, –5), (–3, 9) are solutions for the equation y = 5x? Click here to see answer by jim_thompson5910(28598)

 Question 93024: If X-3 is a factor of X^4-3X^3+KX+3, what is the value of K? Click here to see answer by Edwin McCravy(8909)

 Question 93105: Choose the one alternative that best completes the statement or answers the question. Solve by completing the square. x^2 - 6x - 40 = 0 a) 10, -4 b) -10, 4 c)(-36, -4 d) square root of -40, negative square root of -40 I think the answer is d after I plugged in all the options, but I don't know how to prove it. When I try to use completing the square I get up to this point, 6 plus or minus the square root of 160 over 2 and I can't go any further. Thanks so much!! Click here to see answer by stanbon(57387)
 Question 93105: Choose the one alternative that best completes the statement or answers the question. Solve by completing the square. x^2 - 6x - 40 = 0 a) 10, -4 b) -10, 4 c)(-36, -4 d) square root of -40, negative square root of -40 I think the answer is d after I plugged in all the options, but I don't know how to prove it. When I try to use completing the square I get up to this point, 6 plus or minus the square root of 160 over 2 and I can't go any further. Thanks so much!! Click here to see answer by tutorcecilia(2152)
 Question 93105: Choose the one alternative that best completes the statement or answers the question. Solve by completing the square. x^2 - 6x - 40 = 0 a) 10, -4 b) -10, 4 c)(-36, -4 d) square root of -40, negative square root of -40 I think the answer is d after I plugged in all the options, but I don't know how to prove it. When I try to use completing the square I get up to this point, 6 plus or minus the square root of 160 over 2 and I can't go any further. Thanks so much!! Click here to see answer by jim_thompson5910(28598)

 Question 93119: The length of a rectanble is three inches more than the width. The area of the rectangle is 180 inches. Find the width of the rectangle. I know that the length is x + 3 and the width is x so the equation must be x(x + 3) = 180, but I don't know where I keep messing up when I go to solve it. Thanks so much for your help!! Click here to see answer by Nate(3500)

 Question 93118: Find a general form equation for the line through the pair of points. (1,4) and (8,-2) I know I am supposed to use the equation Ax + By = C, but I don't know how to plug in for A, B, and C. Please help!! Thanks so much!! Click here to see answer by jim_thompson5910(28598)

 Question 93120: Simplify: (3x + 4 / x + 6) - (2x / x + 1) I worked this problem out until I got the answer (-5x + 4) / (7x - 6), but I'm not sure if it's correct or not. Thanks so much!! Click here to see answer by stanbon(57387)