Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 167490: what is x in 3x + 7=2x + 19?

Click here to see answer by nerdybill(6963)

Question 167490: what is x in 3x + 7=2x + 19?

Click here to see answer by Mathtut(3670)

Question 167515: 8+4x+5x=62
-94=4x+3x-10
Click here to see answer by partygirl1122(6)

Question 167554: The sum of two numbers is 133. Four times the smaller number equals three times the greater number. Find the numbers
Click here to see answer by KnightOwlTutor(293)

Question 167654: Rational form 3x+7=9
Click here to see answer by jim_thompson5910(28598)

Question 167742: # A Vancouver travel agency advertises all-expenses-paid trips to the Grey Cup Game for special groups. Transportation is by bus which seats 48 passengers, and the charge per person is $80, plus an additional $2 for each empty seat.
1. If there are X empty seats, find the equations for:
1. How many passengers are on the bus and
2. How much does each pay?
2. What are the travel agency's total revenue when there are X empty seats?
3. Find the maximum revenue.
I have come up with the following solutions but I believe they want some or all of these answers to be in the form of quadratic equations. 1i)80-x ii)80+2x/(48-x) 2.Total revenue=80*(48-x)+2x 3. Maximum revenue=80*48
If anyone can show me how to create quadratic equations for these questions, I would appreciate it very much.

Click here to see answer by stanbon(57424)

Question 167783: (b) (3x+2) (9x+3) = 81
Click here to see answer by jim_thompson5910(28598)

Question 167792: (b) (l + 2) (l – 4) = 20 cm2, find l

Click here to see answer by jim_thompson5910(28598)

Question 167792: (b) (l + 2) (l – 4) = 20 cm2, find l

Click here to see answer by stanbon(57424)

Question 167796: Please help, I'm lost
-9x+1.7=3x+2.9 (the x is not times but the letter x, so its x I am trying to work out)
Click here to see answer by jim_thompson5910(28598)

Question 167761: The equation C=MX+B can be used to modle the monthly cost,C, of a cell phone plan where B is the flat monthly cost, M represent the cost in dollars per minute and X is the number of minutes used in the month. Choose a flat monthly rate and cost per minute and insert the values you have chosen for M and B into the equation. Then use this equation to find the total monthly cost C if 68 minutes are used.
Click here to see answer by midwood_trail(310)

Question 167851: Can someone explain to me how -2=p-120/q-60 becomes p=-2q+240 ??
Click here to see answer by Earlsdon(6291)

Question 167901: I have to write an inequality that demonstrates that I wish to spend no less than $6000 and no more than #10000. How do I go about this?

Click here to see answer by checkley77(12569)

Question 167919: solve 3x +4y = 8 for y
Click here to see answer by jim_thompson5910(28598)

Question 167915: can you show me how to do this problem 2/3 x +1/6x=2
Click here to see answer by checkley77(12569)

Question 167915: can you show me how to do this problem 2/3 x +1/6x=2
Click here to see answer by jim_thompson5910(28598)

Question 167964: Solve for x. - 2(x + 4) + 5 = 2(x + 3) + 6
Click here to see answer by jim_thompson5910(28598)

Question 167962: I have four more problems that I am struggling with, help me.
Solve for x. - 14 + x - 6 = 12 - 6 + 18
Click here to see answer by jim_thompson5910(28598)

Question 167963: Solve for x: (2/3) - (5/6) = x - (7/9)
Click here to see answer by checkley77(12569)

Question 167991: 9x-2 (x+6) if x=10
Click here to see answer by stanbon(57424)

Question 167990: 22X + 5Y + 7Z = 12
10X + 3Y + 2Z = 5
9X + 2Y + 12Z = 14
I need to solve for X,Y,Z
Click here to see answer by stanbon(57424)

Question 168023: Solve for x, present your answer in decimal form;

- 4.2x + 1.5 = -2.2x - 2.5

Click here to see answer by stanbon(57424)

Question 168022: I need some assistance with solving this problem
Solve for x. (3/4) x = (1/4) + (5/12)
Click here to see answer by jojo14344(1512)

Question 168022: I need some assistance with solving this problem
Solve for x. (3/4) x = (1/4) + (5/12)
Click here to see answer by je02(2)

Question 168080: 3x+7=9
Click here to see answer by jojo14344(1512)

Question 168070: Solve
10x^2=9x+9
Click here to see answer by jojo14344(1512)

Question 168068: solve
x^2+6x=-5
Click here to see answer by jojo14344(1512)

Question 168103: -3(x+5)+3=12

Click here to see answer by checkley77(12569)

Question 168165: 55x-3(9x+12)= -64
Click here to see answer by jim_thompson5910(28598)

Question 168153: how do you know where to type in equations on a keyboard such as 4 to the second power
Click here to see answer by ankor@dixie-net.com(15667)

Question 168153: how do you know where to type in equations on a keyboard such as 4 to the second power
Click here to see answer by gonzo(654)

Question 168071: Need help with factoring
Factor
3x^3y-12xy^3+6x^4y^2
Click here to see answer by ankor@dixie-net.com(15667)

Question 168180: Please help me with this equation. The title of the page is Solving two-step eqautions. 37-4v=57.4
Click here to see answer by jim_thompson5910(28598)

Question 168180: Please help me with this equation. The title of the page is Solving two-step eqautions. 37-4v=57.4
Click here to see answer by blake_m(1)

Question 168187: What is the equation for these rules:
The area of a triangle is one-half its base multiplied by its height.
Three big marshmallows are needed to make each s'more.
The number of quarters in an amount of money expressed in dollars is four times the number of dollars.
A half-cup of unpopped popcorn is needed to make 6 cups of popped popcorn.

Click here to see answer by stanbon(57424)

Question 168222: Solve: x+2/3-4= -x/2
Click here to see answer by jim_thompson5910(28598)

Question 168189: P+7/2=-5/4
Click here to see answer by checkley77(12569)

Question 168132: what is tha answer to 21=x+9
Click here to see answer by checkley77(12569)

Question 168131: what is tha answer to 21=x+9
Click here to see answer by checkley77(12569)

Question 168300: PLEASE HELP ME WITH THIS "EXPRESS THE FOLLOWING REAL NUMBER AS THE QUOTIENT OF TWO INTEGERS"
1. 5 7/8
2. 25
3. 0
4. 10.62
Click here to see answer by stanbon(57424)

Question 168310: I am trying to solve x+3/10 = -2/5
I have tried working it with the addition principle.
x+3/10 = -2/5
x + 3/10-3/10= -2/5-3/10
x = -5/10
However, the solution is said to be x= -7
-5/10 + 3/10 = -2/5
How does -7/10 - 3/10 = -2/5 ?
Click here to see answer by Mathtut(3670)

Question 168344: how do you add or subtract a number and a variable?
Click here to see answer by Fombitz(13828)

Question 168367: This may seem easy, but it is harder than it appears. The problem is V=1/3Ar (solve for r). Thanks in advance.
Click here to see answer by Mathtut(3670)

Question 168370: slove for x :3(x-10)=-x+18
Click here to see answer by checkley77(12569)

Question 168385: I need to determine x, y and z when x+y+z=1150 and x=4z-100 and x=6y+50. So far the only thing I have figured out is that 1150=1150. Not a good answer.
Can someone please help.
Click here to see answer by stanbon(57424)

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