Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 447161: how can i write six times the difference of a number and 9 is 54 as an equation?.
Click here to see answer by Leaf W.(97)

Question 447113: find 2n^2 if n(n+3)=4
Click here to see answer by htmentor(809)

Question 447217: Mel is 3 years older than Rafat and Aurelio is twice as old as Mel. The sum of their ages is 57. How old is Mel?
Click here to see answer by jorel1380(2518)

Question 447221: Pasha is thinking of a number such that when twice the number is added to three times one more than the number seh gets the same result as when she multiplies four times one less than the number. What number is Pasha thinking about?
Click here to see answer by ankor@dixie-net.com(15747)

Question 447238: 30% of the tickets sold by a movie theater were children's tickets at $4 ea. The rest of the tickets were sold at the full price of $8.50 ea. The theater collected $252 for the childrens tickets. How many tickets did they sell in all?
Click here to see answer by mananth(12270)

Question 447195: 10-29x=-10x^2
Click here to see answer by jorel1380(2518)

Question 447285: Which equation would make this system have an infinite number of solutions?
{y=x+2
_______
A. 2y=2x+2
B. y-2=x
C. y=2x
D. y=3x-1
Click here to see answer by rwm(914)

Question 447300: Two cyclists leave town at the same time on the same road going in the same direction. Cyclist A is going 6 miles per hour faster than cyclist B. After 8 hours cyclist A has traveled three times the distance as cyclist B. How fast is cyclist B traveling?
Click here to see answer by ankor@dixie-net.com(15747)

Question 447396: I need help writing the slope-intercept equation for the line that passes through (-3, -15) and is perpendicular to -6x + 8y = 3. Thank you.
Click here to see answer by mananth(12270)

Question 447395: Could you help me write the slope-intercept equation for the line that passes through (-1, -4) and (4, 11)? Thank you.
Click here to see answer by mananth(12270)

Question 447390: Can you help me find the slope and y-intercept of the line in the given equation?
y = 3/4 x - 2
Click here to see answer by mananth(12270)

Question 447394: Can you help me write the slope-intercept equation for the line that passes through (6, -9) and has slope -7/6? Thank you!
Click here to see answer by poliphob3.14(115)

Question 447427: 3/(2x)-6/x=9
Click here to see answer by www.achukanjosh@gmail.com(3)

Question 447427: 3/(2x)-6/x=9
Click here to see answer by Leaf W.(97)

Question 447461: what does the x represent in this equation 2(x + 4)= 16?
Click here to see answer by mananth(12270)

Question 447397: The jobless rate in a small town in Nevada increased from 8.7% in 2007 to 12.3% in 2009. Can you help me predict the jobless rate in 2010? Thanks so much.
Click here to see answer by josmiceli(9819)

Question 447393: Can you help me write the slope-intercept equation for the line with slope
-2/5 and y-intercept (0, -3) and graph the line?
Click here to see answer by sudhanshu_kmr(1152)

Question 447498: one angle of triangle is 1 degree more than twice a second angle the third angle is 13 degrees less then the second angle
Click here to see answer by jorel1380(2518)

Question 447570: Tim kicks a ball off ground. After t seconds, its height, h (in feet), is give by formula h=-16t^2 +64t. what is maximum height reached by ball?
Click here to see answer by Alan3354(31538)

Question 447568: Given f(x)=-3x^2 +5, what is range of function?
Click here to see answer by htmentor(809)

Question 447634: how would you solve this equation 3x2 + 24x = 0 for x?
Click here to see answer by josmiceli(9819)

Question 447599: Solve: x-5/x<0

Click here to see answer by jorel1380(2518)

Question 447691: I have the following points (25, 16) and (40,26) and thanks to the very generous help of scott8148 I was able to figure out the first two part of this problem. I figured out the slope as m=2/3, and with that I figured out the y-intercept as
- 2/3. Using this equation that he graciously provided. This points represented the height a ball was dropped from as the x-axis and the bounce heights as the y axis.
So given the information above how would I set up an equation to determine the value of x if y=100. I also know that on this same graph is the point (50,33) So would I be correct in assuming then that by increasing the the value of x to something like 151 I would thus attain a y value of approximately 100?

Click here to see answer by solver91311(17077)

Question 447725: How to change 6x - 2y = 10 to slope intercept ( y = mx + b ) form ?
Click here to see answer by solver91311(17077)

Question 447745: Will you assist me in writing the slope-intercept equation for the line that passes through (6, -9) and has slope -7/6?
Also, would you mind showing your work, so that I will have a better understanding of how you got to the actual answer? Thank you.
Click here to see answer by solver91311(17077)

Question 447863: Which products of factors is equivalent to: 5x^6+135
Click here to see answer by robertb(4012)

Question 447880: Find the domain of the function f(x)=(x+5)/(x^2+2x-15). Simplify and find the equations of any vertical asymptotes.
Click here to see answer by robertb(4012)

Question 447867: Given the linear equation y = -1/3 x + 6, find the y-coordinates of the points (-9, ), (-3, ), and (6, ).
Would you mind helping me, please? Also, I would greatly appreciate it if you could show the work you used to arrive to the answer. Thanks so much!
Click here to see answer by richard1234(5390)

Question 447870: Write the slope-intercept equation for the line that passes through
(6, -9) and has slope -7/6.
I need a little assistance, please! Also, if you could show your work, I would appreciate it. Basically, I would like to see how you arrived to your answer. Thank you very much for your time!

Click here to see answer by sudhanshu_kmr(1152)

Question 447928: 9x-6xy+2y
Click here to see answer by rwm(914)

Question 447928: 9x-6xy+2y
Click here to see answer by The One(11)

Question 447869: What are all the solutions to -10/(x-9) = x/2
Click here to see answer by The One(11)

Question 447916: There are 210 members in a band and they are marching with 14 members in each row. How many rows are there?
Click here to see answer by mjk062183(1)

Question 447925: List the factors in each expression: (a + b)12
I submitted my answer, and the teacher told me I was wrong each time.
This was one of my answers:
1, 2, 3, 4, 6, 12
1 x 12
2 x 6
3 x 4
She told me this:
"The factors for this problem would be the values that are being multiplied together. For example, 9x(1+b) would have the factors 9, x, and (1+b). Can you see how this would change your answer?"
What's the right answer, because I don't get it?
Click here to see answer by Edwin McCravy(8999)

Question 447960: How do you write 8280 in scientific notation
Click here to see answer by Edwin McCravy(8999)

Question 447924: List the factors in each expression: (a + b)12
I'm needing a little bit of help with this. I turned in my answer about 3 times, and the teacher told me I was incorrect all 3 times. Please, help!
Click here to see answer by richard1234(5390)

Question 448056: I keep getting confused when subtracting negative #'s! It is driving me crazy! What is 3- -4? Why?
Click here to see answer by algebrahouse.com(1079)

Question 448121: How to write these sets?
D= {x| x is a whole number}
E= {x| x is a perfect square <10}
F= {x| x is an even number between 10 & 20}
DUE
DUF
U= union
Click here to see answer by stanbon(57984)

Question 448333: 3) The units digit is 3 times more the tens digit. When the digits are reversed, the new number is 54 more than the original.
4)The units digit is 3 times the tens digit. The number is 12 more than 9 times the tens digit.

(WILL GIVE AMAZING COMMENT.)
Click here to see answer by jim_thompson5910(28717)

Question 448337: What is the answer to this equation 2x/5 = 4+2/3 ? If Not the answer how do i solve this equation?
Click here to see answer by mananth(12270)

Question 448527: find the value of x
question= 5^[x-3] multiply 2^ [2x-3]
Click here to see answer by Alan3354(31538)

Question 448557: 5x-1 = 3x+7
Click here to see answer by edjones(7569)

Question 448570: How to solve 7x2=21x ? (seven x squared equals twenty-one x). The answer key says the answer is 0,3 but I do not how how they solved it. My educated guess is that I need to make them both equal to zero but am not sure. Thank you for your help and look forward to hearing from you.
Click here to see answer by stanbon(57984)

Question 448534: Simplify please show all work
x^2-2x+5x-(-x^2+7x)
Thank you so much
Click here to see answer by jim_thompson5910(28717)

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