Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 297109: I'm suppose to solve the following Quadratic equation by factoring and using the Zero product:
28x^2+20x=0

I'm really confused by this equation! is there something missing or am I missing something?
Click here to see answer by user_dude2008(1861)

Question 297126: I cannot solve this equation: t^2 - 1/6 = 35/6. Thank you for any help.
Click here to see answer by mananth(12270)

Question 297161: Solve each system by elimination:
–x + 3y = 6
x – 9y = 9
Any help would be appreciated on this problem
Eric
Click here to see answer by checkley77(12569)

Question 297125: I cannot solve this equation: t^2 - 1/6 = 35/6. Thank you for any help.
Click here to see answer by Fombitz(13828)

Question 297258: If Mary can paint a house in 4 hours and Matt in 6 hours, how long will it take them to paint the house together? How would you set up the equation for this problem?
Click here to see answer by richwmiller(9143)

Question 297222: 2a squared -9a -5 =0
Click here to see answer by JBarnum(2044)

Question 297351: 37=14w-19
how do i solve this equation?

Click here to see answer by jim_thompson5910(28598)

Question 297354:
(c). Long’s Peak in Rocky Mountain National Park, is 14,255 feet in elevation. How far can you see to the horizon from the top of Long’s Peak? Can you see Cheyenne, Wyoming (about 89 miles away)? Explain your answer.

Click here to see answer by richwmiller(9143)

Question 297267: A chemist has a 80mL of a 12% acid solution. How many mL of base must be added to get a mix that is an 8% acid solution
Click here to see answer by richwmiller(9143)

Question 297127: Find all values of k so that each trinomial can be factored as two binomials using integers:
2x^2 + 12x + k,k > 0
THANK YOU FOR ANY HELP!
Click here to see answer by ankor@dixie-net.com(15660)

Question 297546:
Click here to see answer by richwmiller(9143)

Question 297558: please help me solve this equation/ -3x+2=-7
Click here to see answer by TakeishaM(13)

Question 297562: please help me solve this equation/ -3x+2=-7
Click here to see answer by Deina(147)

Question 297607: simplify 7-(5.3+8)
Click here to see answer by user_dude2008(1861)

Question 297605: Please help me solve this equation f(x)=X₂-X+2.
I don't remember what the X₂ means.
Click here to see answer by nyc_function(2733)

Question 297606: five more than three times a number is equal to 7 less than the number. What is the number?
Click here to see answer by richwmiller(9143)

Question 297742: Example: Sally is 38 and Marie is 6. How old is Sally in years if she is 3 times Marie's age. How would you write an equation to solve for both ages?
Click here to see answer by stanbon(57387)

Question 297749: Set up an equation and solve.
Find two intergers whose products is 104 such that one of the integers is more than three times less than the other integer.
Click here to see answer by Alan3354(30993)

Question 297896: this question is a system of two equation:y=m subcript 1 x +b subscript 1 and y= m subcript 2 x + b subscript 2 solve for x and y

the answer is:x=b subs 2 -b subscript 1 over m sub 1 -m sub 2 and y = m sub1 +bsub2 _msub2 + b sub1... i want to know the procedure on how to do the answer
Click here to see answer by user_dude2008(1861)

Question 298184: F(x)=14x^3+13x^2-4x-3 Find all the zero
Click here to see answer by richwmiller(9143)

Question 298177: I need to solve for all variables.
1)2x-x+5y+z=-3
2)3w+2x+2y-6z=-32
3)w+3x+3y-z=-47
4)5w-2x-3y+3z=49
Click here to see answer by Fombitz(13828)

Question 298314: I am attempting to solve this problem and would appreciate some help:

Click here to see answer by richwmiller(9143)

Question 298332: I have solved this problem, but I doubt if I did this in the correct manner or even if the problem is correct.
Here is the problem as stated: [(37*8.9)(4-2(3-1))]-5(2/(2-7))(5)= ?
This is my work below:
[(37*8.9)(4-2(3-1))]-5(2/(2-7))(5)= ? (original problem)
1.) 37*8.9 = 329.3 (I start by going left to right - multiplying the first set of parentheses)
2.) (3-1) = 2 (I than remember to always work the inner most part of the problem)
3.) (4-2+2) = 2 (According to my instructor, when it comes to multiplication/division and addition/subtraction, one is able to go from left to right rather than adding or subtracting first. I am not sure if this is correct, but here this is done by his teaching)
4.) (2-7)=-5 (I than move on to the right side of the equal sign)
5.) 2/-5=-0.4 (I than finish what is inside of the parentheses)
6.) 329.3+4-5(-0.4)(5) (This is what I have thus far into the equation)
7.) -5(-0.4)=2
329.3+4+2(5)
8.) 2(5)=10
329.3+4+10
9.) 343.3 (After I combine the last 3 terms)
So... I'm pretty sure that there is something I missed while working the problem. Please help me understand what I might have done wrong. Thanks!

Click here to see answer by richwmiller(9143)

Question 298484: whats the square root of 149 ?

Click here to see answer by checkley77(12569)

Question 298484: whats the square root of 149 ?

Click here to see answer by nyc_function(2733)

Question 298525: I need to find the formula 4 1/5 x 10/21 x 9/20
Click here to see answer by checkley77(12569)

Question 298579: im confused and i need help i need to simplify an equation 3x-6/5x-20(10x-40/27x-54) i know its not cross multiply and i did the problem 5 times and i get a different answer so i know im doing it wrong
please help
Click here to see answer by stanbon(57387)

Question 298653: If y varies directly as x, and y = 1/3 when x = 4, write an equation for this relationship:
a. y = (4/3)x
b. y = (1/12)x
c. y = (3/4)x
d. y = 4/3x
Would the answer be b or d ? I am guessing b but I am not sure what the difference is between b and d since they seem to produce the same answer.
Click here to see answer by richwmiller(9143)

Question 298768: Solve for C:
0.884 = (pi/2)[(c)^2 - (c/2)^2]
Click here to see answer by user_dude2008(1861)

Question 298801: 8/3x+1/3x=4x+30/3+7/3x
Click here to see answer by user_dude2008(1861)

Question 298810: Four times a number is 4 more than the opposite of another. The difference of twice the number and the other number is 8. Find the smaller of the two numbers.
Click here to see answer by user_dude2008(1861)

Question 298727: Jim drove his truck 500 kilometers in the same time that Ed drove his truck 450 kilometers. Jim drove 5 kilometers an hour faster than Ed. Find the speed of each man.
Click here to see answer by ankor@dixie-net.com(15660)

Question 298848: From 1945 to 1960, the U.S. population grew from 150 million to 185 million people.
a)What is the relative change for this population increase?
Click here to see answer by checkley77(12569)

Question 298930: -2w-5=-4+8w
Click here to see answer by Jeff Gordon(65)

Question 298944: if a*a*b*b=28 What are possible a and b
Click here to see answer by Stitch(352)

Question 298982: 2/5x - 3/10x = 3 what is x?
Click here to see answer by mananth(12270)

Question 298982: 2/5x - 3/10x = 3 what is x?
Click here to see answer by Alan3354(30993)

Question 299007: I need help trying to solve this equation:
Find the x and y intercepts
x-4y=12
Thank you very much for your help. I really appreciate it.
Click here to see answer by stanbon(57387)

Question 299148: a/a-6=-2/a-1 solve, list any resrictions
Click here to see answer by ankor@dixie-net.com(15660)

Question 299191: Here is another one that has me stumped. Can someone help me with this?
Solve:
5/2x+1/4x= 11/4+x
Solve for x=
Type an integer or simplified fraction.
Thanks in advance!!
Click here to see answer by jim_thompson5910(28598)

Question 299199: An airplane took 4 hours to fly 1200 miles agianst a headwind.The return trip with the wind took 3 hours. Find the speed of the plane in still air and the speed of the wind. What is the speed of the wind in still air? What is the wind speed?
Click here to see answer by mananth(12270)

Question 299198: one canned juice drink is 30% orange juice; another is 10% orange juice.How many liters of each should be mixed together in order to get 20L that is 15% orange juice?
Click here to see answer by Deina(147)

Question 299250: It says in the book I'm supposed to write an equation and use it to solve the problem. The questions states: five sixths of a number is -60. What is the number. I think the answer is -300 but I don't really know how to show the work correctly or if that is even the right answer? Any thoughts? Thanks.
Click here to see answer by rajagopalan(158)

Question 299249: The problem is 4x/5 + 3/2 = 2x the answer I got was x=1.25. I checked it with 1.25 in the equation and it works but all the problems I do like this seem to come out with decimal answers and I don't know if that is right. I feel like it's not. Help please!
Click here to see answer by rajagopalan(158)

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