Questions on Algebra: Systems of equations that are not linear answered by real tutors!

Tutors Answer Your Questions about Systems-of-equations (FREE)

Question 69290: Could someone help me to solve
2x^2+3x-1 using the quadratic formula which is -b+-(sqrt)b^2-4ac/2a
Thanks so much for your help in advance!
Click here to see answer by stanbon(75887)

Question 69289: Could someone please help me to solve
3x^2-11x=4

Thanks in advance for your help!
Click here to see answer by Earlsdon(6294)

Question 69288: Could someone please help me to simplify
(sqrt) 72x^2y^5
Thanks in advance for your help
Click here to see answer by checkley75(3666)

Question 69396: given: f(a)=(sqrt)a^2+3a, find a(-2)

Thanks!
Click here to see answer by stanbon(75887)

Question 69395: Hi! Could someone please help me simplify
^3(sqrt)48
Thanks so much for your help in advance!
Click here to see answer by stanbon(75887)

Question 69401: given: f(x)=x^2+3
g(x)(sqrt)2-x
find f o g (x)

Thanks!
Click here to see answer by stanbon(75887)

Question 69398: given: f(x)=x-3 and g(x)=x-2 find f*g(x)

Thanks
Click here to see answer by tutorcecilia(2152)

Question 69418: solve 4(x+5)-8x=-2(x-2)

Click here to see answer by rkennedy(3)

Question 69423: solve for L. p=2l+2w
Click here to see answer by Nate(3500)

Question 69417: I need some help to evaluate logv10 100
**the v is the opposite of ^*** if that makes any sense1
Click here to see answer by Nate(3500)

Question 69416: I need some help to find the appropiate value of x for the expression e^x=10
Click here to see answer by Nate(3500)

Question 69552: given f(x)=1/x and g(x)=2/x^2 find f+g(-3)
a.-5/9
b.-1/9
c.1/2
d. 1/12
Thanks
Click here to see answer by Edwin McCravy(20054)

Question 69616: I have tried multiple times to solve this problem! Please Help and guide me through the steps properly!.
Problem:
Find a system of equations with (2, -4) as the solution.
Click here to see answer by checkley75(3666)

Question 69760: Would someone please help me with this problem...
Given f(x)=x^2+3 and g(x)(sqrt)2-x find f o g(x).
a.5-x
b.1-x
c (sqrt)5-x^2
d. 7+x^2

Thanks
Click here to see answer by stanbon(75887)

Question 69815: heres my problem its probly so easy but i cant understand it.
4/5t - 1 = 1/5t + 5
Click here to see answer by ptaylor(2198)

Question 69950: I think that this question goes under this section:
Which of the following statements is true for the graphs of equations 1 and 2??
1. 2x+y=15 2. 3y=-6x+30
A- the graphs of 1 and 2 are parallel.
B- the graphs of 1 and 2 are perpendicular.
C- the graphs of 1 and 2 are the same line.
D- the graphs of 1 and 2 are neither parallel nor perpendicular.
E- none of the above.

Click here to see answer by checkley75(3666)

Question 70022: Hi! I need some help with this radical
^4(sqrt)z^4
**the^4 is an index number**
a.4
b.z
c.z^2
d.z^4
Thanks so much for your help in advance!!
Click here to see answer by tutorcecilia(2152)

Question 70021: I need some help to simplify this radical
^3(sqrt) 48
**the ^ is an index number, if that made sense****
a. 16
b. 4 ^3(sqrt)4
c. 2 ^3/9sqrt)6
d. 8 ^3(sqrt)6
Thanks so much for the help in advance!
Click here to see answer by tutorcecilia(2152)

Question 70499: I need help in parellel perpendicular line by useing equations.

Click here to see answer by piglet162431(90)

Question 70060: given: f(x)=x^2+3 and g(x) = (sqrt)2-x find f o g(x)
Click here to see answer by Nate(3500)

Question 70801: what is the standard form of the equation of the line with slope7 over 2 and y- intercept 5?
Click here to see answer by josmiceli(19441)

Question 71332: Two cars leave Salt Lake City, traveling in opposite directions. One car travels at a speed of 80 km/h and the other at 96 km/h. In how many hours will they be 528 km apart?
Click here to see answer by checkley75(3666)

Question 71411: x+y=12
x-y=4
slove using elimination
Click here to see answer by 303795(602)

Question 71443: 4x + y = 16, 2x + 3y = 24
I have tried mul. the 1st equation by -3. Then adding the 2 together. I have tried mul. 2nd equation by -2, then adding the 2 together. I have tried y = 16 - 4x, then tried to substitute y into the 2nd equation. I can't seem to figure it out.
Click here to see answer by Earlsdon(6294)

Question 71990: Solve this inequalities: 5x - 54 < 36 - 3x (note there is a line under the less than sign)
Click here to see answer by checkley75(3666)

Question 71986: Solve this equalities: x + 8 > 20 (note there is a line under the greater than sign)
Click here to see answer by elima(1433)

Question 72172: Moly is 3 years younger than Havier. In 3 year, havier will be as twice as molly age.
Click here to see answer by checkley75(3666)

Question 72232: the sum of the two-digit number is 11. When the number is reversed, the number is 63 less than the original number. Find the original number and show work.
Click here to see answer by stanbon(75887)

Question 72379: Please help me im failing and need help fast!
Solve the following systems:
1.)x/a+y=2b,
x/b-y=a-b

2.)ax-by=0,
x+y=a+b/ab
3.)x+b/a+y-b/b=a+b/b,
x-a/b-y-a/a=-a+b/a
Click here to see answer by pradhyumna.kumar@gmail.com(62)

Question 72606: Please help me! I don't understand this at all!! I have been out of school sick for the past 2 weeks and i don't understand all this homework that my teacher sent home with me.
The questions ask to write an equation, in slope-intercept form..
my question is how to put it into an equation.
if the question is:
slope of -2/5 and y-intercept of 3
PLEASE HELP ME FIND THIS ANSWER!! If i can be able to understand this question then it will help me do all of my homework. PLEASE, PLEASE help me.
Thanks for all your help,
Lauren
Click here to see answer by bucky(2189)

Question 72644: This problem just doesn's make any sense to me! I don't even know where to begin!
Find values for m and b in the following system so that the solution to the sytsem is (-3,4).
5x+7y=b
mx+y=22
Click here to see answer by stanbon(75887)

Question 72674: please can you help me solve this equation :x^2-2x+2=y and 4x-7=y to find x and y thank you very very much .
Click here to see answer by ankor@dixie-net.com(22740)

Question 73140: find the maximum and minimum values of
T= 6x + 10y subject to
x+y < or = to 10
5x + 10y > or = 50
x > or = 2
y > or = 0
Can you possibly help me with this?
Thank You
Click here to see answer by stanbon(75887)

Question 73230: I would really appreciate any help I could get on this question. Word problems are sooo very challenging sometimes and I just cannot figure out how to do this one :<(
An airplane took 2.5 hours to fly 625 miles with the wind. It took 4 hours and 10 minutes to make the return trip against the same wind. Find the wind speed and the speed of the plane in still air.
(All I can see is that if you convert both times traveled into minutes then there is a 100 minute difference and divided by 625 miles would be 6.25 miles per minute but which part of the question would this answer and is it even relevent to either question??)
Thanks so much in advance for any help that can be provided :>)
Click here to see answer by ankor@dixie-net.com(22740)

Question 73699: Solve using the subtraction method.
x+y=4
y=2x+1
Click here to see answer by imsospecial105(1)

Question 73687: The sum of two numbers is 115. The difference is 21. Find the numbers.(I've been having a hard time getting myself to learn most of this chapter and the test is soon, so I really need this help! Thanks!)
Click here to see answer by checkley75(3666)

Question 73692: Hi - could someone please provide some help on this one? Thanks so very much in advance!
One train leaves a station heading due west. Two hours later a second train leaves the same station heading due east. The second train is traveling 15mi/h faster than the first. Six hours after the second train leaves, the two trains are 580 miles apart. Find the rate at which each train is traveling.
(I think I am getting confused by the fact that the second train leaves 2 hours after the first rather than at the same time)
Thanks again for any help on this one :>)
Click here to see answer by ankor@dixie-net.com(22740)

Question 73763: Jeff starts driving at 75 miles per hour from the same point that Lauren starts driving at 70 miles per hour. They drive in opposite directions, Lauren has a half-hour head start. How long will they be able to talk on their cell phones that have a 370-mile range?
Click here to see answer by bucky(2189)

Question 73762: Jeff starts driving at 75 miles per hour from the same point that Lauren starts driving at 70 miles per hour. They drive in opposite directions, Lauren has a half-hour head start. How long will they be able to talk on their cell phones that have a 370-mile range?
Click here to see answer by bucky(2189)

Question 73697: y=2x=1
y=-3x-4
Click here to see answer by checkley75(3666)

Question 73870: Write the equaition of the line through the points (-5,-7) and (-6,-4).
A) 12; y=11*x+69
B) 11; y=12*x+68
C) 11; y=11*x+69
D) 12; y=12*x+68

Click here to see answer by checkley75(3666)

Question 74349: solve the inequality
9r+15<24+10r

Click here to see answer by jim_thompson5910(35256)

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