Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 67814: I am trying to solve and check can you help me where I am wrong.
5x+8+3x-x+5=6x-3
7x+13=6x-3
3x 3x
10x+13=9x-3
3 3
10x+16=9x
-9x -9x
x+16=0
-16 -16
x=-16
check
5x+8+3x-x+5=6x-3
-80+8-48+16+5=-96-3
-99=-99

Click here to see answer by Earlsdon(6294)

Question 67828: Simplify (2x - 3) + (-x-2)
Please show step-by-step instructions so that my son will see how to get the answer for the future.
Click here to see answer by ptaylor(2198)

Question 67836: X-84=4*(X-84)
With the above equations How do i know the value of X.Thanks
Click here to see answer by stanbon(75887)

Question 67869: Simplify. Assume all variables represent positive numbers.
SQRT x^4y^3
Can anyone help me understand this type of problem. I am so lost with the concept pf trying to figure this problem out. Thank you in advance as well!
Click here to see answer by stanbon(75887)

Question 67878: Find the distance between (4,0) and (-9,0)
How would I go about solving this type of problem? The answers are one of the following:
A) 9
B) sqrt97
C) 5
D) 13
Thank you!
Click here to see answer by stanbon(75887)

Question 67880: Simplify:
SQRT 108
How do I get the number that is used to simplify this? The answers I have to choose form do not really help me gather the concept to solve this type of problem. Answers are:
A)18 sqrt3
B)54
C)9 sqrt6
D)6 sqrt 3
Thanks for the help in the solving mechanisms you show!
Click here to see answer by stanbon(75887)

Question 67883: Simplify:
SQRT 7 (9 sqrt 2 - 3 sqrt 7)
I am completely lost on thsi problem, is there any help out there? Thank you so much!!!!!
Click here to see answer by stanbon(75887)

Question 67881: Use a calculator to approximate SQRT3/5 to the nearest hundreth.
Does anyone know the steps to do this on a calculator? Thank you!
Click here to see answer by stanbon(75887)

Question 67879: Determine whether it is rational or irrational:
SQRT 49/100
This would be irrational because there is no other number that can simplify this matter correct? Thanks a lot for you help.
Click here to see answer by stanbon(75887)

Question 67877: Determine whether this is rational or irrational:
SQRT 25
This would be rational correct? Thank you for all your help!
Click here to see answer by stanbon(75887)

Question 67865: Maria deposited $1200 in an account that paid 6 1/2 percent interest compounded continuously. How much money did she have in 8 years? (A, = Pe^rt)
Click here to see answer by stanbon(75887)

Question 67848: What is the solution for 1/Y + 1/X = 1/XY, please solve for "Y".
Click here to see answer by ankor@dixie-net.com(22740)

Question 67875: Simplify:
5 sqrt5 - sqrt 20
The answers to choose from are:
A) 3 sqrt5
B) 4 sqrt5
C) Cannot be simplified
D) 4 sqrt20
Can anyone help me gather the concept of solving this type of problem? Thank you for all your wonderful help in understanding!
Click here to see answer by ankor@dixie-net.com(22740)

Question 67872: Determine whether it is rational or irrational:
3 sqrt 121
I believe this is rational, is this correct? Thank you
Click here to see answer by tutorcecilia(2152)

Question 67870: Simplify:
SQRT 7/100
I have four answers to choose from:
A)sqrt7
------
10
B) 7/50
C) 7/10
D)7 sqrt 100
-------------
100
I believe the answer is D but I want to make sure I am correct on this. Thank you for your help!
Click here to see answer by tutorcecilia(2152)

Question 67853: Solve question using fundamental operations on polynomials.
Find P (-1/2)if
P(x) = x^4 + 3x^2 + 2
Click here to see answer by tutorcecilia(2152)

Question 67849: what does the w equal in this problem?: 34+22w=144
Click here to see answer by tutorcecilia(2152)

Question 67846: Complete the ordered pairs so that each is a solution for the given equation.
Equation:
y = -2x + 5
Availble ordered pairs:
(0, ), ( , 5), ( 3/2, ), ( ,1)
Not sure I understand this one. Thanks for the help.

Click here to see answer by tutorcecilia(2152)

Question 67859: 2 different rectangles have the same width. All four sides of both rectangles
have integer lengths.The areas of the rectangles are 1086 and 828. Find the largest possible value of the common width of the rectangles?
Click here to see answer by ankor@dixie-net.com(22740)

Question 67975: WHAT IS THE LCM OF 9,7,6?
Click here to see answer by funmath(2933)

Question 67958: do u know 5x+12=3x-6
Click here to see answer by funmath(2933)

Question 67996: Evaluate b^2-3ab when a=3 and b=-2.
Click here to see answer by tutorcecilia(2152)

Question 67982: you purcashed on pound of candy for $7. at what price do you need to mark the candy forr salein your candy shop, if you wish to offera 48% discount to your customers, but you need to earn a 56% profit on the original cost?
Click here to see answer by ptaylor(2198)

Question 68018: Evaluate 16/2[8-3(4-2)]+1
Click here to see answer by Zoop(21)

Question 68133: 4(x-2)-3(x-1)=2(x+6)
Click here to see answer by funmath(2933)

Question 68045: 5-x=7+2x-4
how do you write this out to find x?
Click here to see answer by stanbon(75887)

Question 68073: Please help me solve the following equation:
Which real numbers are not in the domain of f(x)? Why aren't they?

Thank you for the help.
Click here to see answer by stanbon(75887)

Question 68157: There are 258 people, adults pay $8 and the children pay $5 to go to a movie theater. The total sum of money the movie theater made that night from selling tickets was $1431. How many children were there.
Click here to see answer by stanbon(75887)

Question 68005: 5-2(y-5)=27 how do you solve and check that and could you show all steps and give a free ex. please and thank you
Click here to see answer by ankor@dixie-net.com(22740)

Question 68156: My problem is 7 + w - 10 = 2w
Can you help me out?
Thank You
Click here to see answer by funmath(2933)

Question 68155: My problem is 4t = 2(7t + 15)
Can you help me out?
Thankz
Click here to see answer by funmath(2933)

Question 68153: My Problem is 19h - 7 = 23 + 14h,its kinda of confusing 2 me
If you could help it would be Greatly appreciated
Click here to see answer by funmath(2933)

Question 68149: Sarah has a collection of nickels, dimes, and quarters worth $15.75. She has 10 more dimes than nickels and twice as many quarters as dimes. How many coins of each kind does she have?
Click here to see answer by ankor@dixie-net.com(22740)

Question 68152: 5x-6y=12 (Solve for x)
Click here to see answer by checkley71(8403)

Question 68150: V=1/3Bh (solve for B)
Click here to see answer by checkley71(8403)

Question 68188: 6a/3xy + 2ab/5x^2y + 4b/2x^2 i tried to simplify this into a single fraction and came up with 60ax 12abx 60x^2y / 30x^2y lcd 30x^2y is this even close?
Click here to see answer by funmath(2933)

Question 68043: 5-x=7+2x-4
what is x
Click here to see answer by checkley71(8403)

Question 68198: Translate the following statement into an algebraic equation. Let x represent the number.
6 times a number is 14 more than that number.

Click here to see answer by ptaylor(2198)

Question 68277: The ten's digit of a two digit number is 2 less than the unit's digit. The value of the number is 7 times the unit's digit. find the digits and the value of the number.
Click here to see answer by stanbon(75887)

Question 68251: I need help to some questions and I need help badly can anyone help me please the questions are as followed:if a=0.65 and b=1.28 and c=-5over2 evaluate - a(-b)+c but the answer I get out of it is three different ones every time its between -4.43,-1.87,and -0.57 I'm confused.The next one is solve the equation for q:6+[Q-2]=-1.The next one is if p=0.75 and q=-1.6,evaluate:p+q-(-0.7).And the last one is solve the equation for b:3over5=9over10b.Thank you for whoever can help thanks
Click here to see answer by ankor@dixie-net.com(22740)

Question 68267: Please help
Divide x^3 - 8 by x - 4 and check
thank you
Click here to see answer by stanbon(75887)

Question 68284: 6 = 3z+3(z-6)
Click here to see answer by ptaylor(2198)

Question 68206: 5x/7 _ 6x/5 = 3/35
Click here to see answer by ptaylor(2198)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580