# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 371136: 28-3W=4.6-w I am having a hard time with this Click here to see answer by rfer(12657)

 Question 371369: Factor completely: y^4-1 I am not sure how to factor this. Thank you. Click here to see answer by Fombitz(13828)
 Question 371369: Factor completely: y^4-1 I am not sure how to factor this. Thank you. Click here to see answer by ewatrrr(10682)

 Question 371371: Factor: w^2-49z^2 - another factoring question, I have tried and I just don't get the process. Click here to see answer by ewatrrr(10682)

 Question 371568: Can you solve for a variable in an equation Thanks Click here to see answer by Alan3354(30993)

 Question 371604: ax + by = cz solve for y Click here to see answer by checkley77(12569)

 Question 371734: find the equation that pass through the point(-2,7) and is parallel to X-6y=3 Click here to see answer by robertb(4012)

 Question 371747: Write the statement as an equation, letting x represent the unknown number. 3 times the sum of a number and 7 is 4 times the same number. Click here to see answer by robertb(4012)

 Question 371756: Given that (0,1) is the center of a circle and (-4,4) is a point on the circle, find the radius of the circle. Answer choices: A.) 1 B.) 2 sqrt(2) C.) 5 D.) 10 E.) None of these Thanks! Click here to see answer by robertb(4012)

 Question 371810: could you solve and explain detailed this equation : Solve -17 + n/5 = ? Click here to see answer by rfer(12657)

 Question 371760: Given that (1,-5) and (3,7) form a pair of diameter points on a circle, find the center of the circle. Answer choices: A.) (2,1) B.) (1,6) C.) (1,1) D.) (-1,-6) E.) (4,2) Click here to see answer by rfer(12657)

 Question 371832: Solve the equation over the interval [0 pi, 2 pi) : 3tan^3x=tanx Click here to see answer by robertb(4012)

 Question 371831: Solve the equation over the interval [0 pi, 2 pi) : Sqrt(3)secx-2=0 Click here to see answer by Fombitz(13828)

 Question 372051: can u help me on this problem 7t-6=-104 Click here to see answer by rfer(12657)

 Question 372077: Jo is thinking of a number. 4 less than 9 times the number is 176. Find Jo's number. Click here to see answer by ewatrrr(10682)

 Question 372109: Please assist with this equation. Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 8x – 5y = 3 7x + y = 51 Click here to see answer by Greenfinch(383)

 Question 372035: perform the indicated operation. simplify show step by step ILL USE " / " to represent the equation. it does not mean to DIVIDE. ""/"" ---MEANS--over NOT divide 5/2-x+ 2x/ x^2-4 - 1/2+x Click here to see answer by ankor@dixie-net.com(15649)

 Question 372143: I got this question wrong at school. The question is 5-r=-2. MY answer was 3 but it was wrong. What is the correct answer. Click here to see answer by Alan3354(30993)

 Question 372105: Please assist me with the equation set for this word problem. Mary invested one amount at 8% simple interest, and a second amount at 5% interest, earning \$49.16 in one year. If she had switched the amounts, she would have earned \$52.37. What were the two amounts? Click here to see answer by checkley79(3050)

 Question 372110: One bacterial culture is 18 days older than a second bacterial culture. In 10 days the first culture will be twice the age of the second. What is the present age of both cultures? I know that: The age of the bacterial culture in ten days = 2 times age of the second bacterial culture But I don't know where to go from here. Click here to see answer by Greenfinch(383)

 Question 372267: using only algebra find the solution... Melissa earns 10% more per hour than her friend Jon. Louise makes 25% less per hour than Jon. What is the ratio of Louise's salary to Melissa's Click here to see answer by robertb(4012)

 Question 372439: Solve the formula for the indicated variable P=a+b+4c, for a Click here to see answer by user_dude2008(1861)

 Question 372391: Simplify 7x-2((4x-3y-2(x-7)) My solution: 7x-2((4x-3y-2(x-7)) =7x-2(4x-3y-(2x-14)) =7x-2(4x-3y-2x+14) =7x-2(2x-3y+14) =7x-(4x+6y-28) =3x+6y-28 Click here to see answer by jim_thompson5910(28593)

 Question 372344: Here is a word problem that I'm having trouble setting up and solving While Michelle sat observing birds at a bird feeder, one fourth of the birds flew away when they were startled by a noise. Two birds left the feeder to go to another stationed a few feet away. Three more birds flew into the branches of a nearby tree. Four birds remained at the feeder. How many birds were at the feeder initially? Click here to see answer by ankor@dixie-net.com(15649)