Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 318369: solve the equation:
81^3x=27^x+2
Click here to see answer by Alan3354(30937)

Question 318373: I need help bad with this!
Midtown Delivery Service delivers packages with cost $1.30 per package to deliver. The fixed cost to run the delivery truck is $75 per day. If the company charges $6.30 per package, how many packages must be delivered daily to break even?
Click here to see answer by rfer(12644)

Question 318437: Elliot paid 1.50 a dozen of flowers. He sold all but 5 dozen of them for $2 a dozen, making a profit of $18. How many dozen flowers did he buy?
Click here to see answer by stanbon(57211)

Question 318367: solve the equation:
4^16=2x+7

Click here to see answer by jim_thompson5910(28476)

Question 318511: FACTORING THE DIFFERENCE OF TWO SQUARES
PLEASE SHOW ALL STEPS
(xy+10)(xy-10)

Click here to see answer by Fombitz(13828)

Question 318482: 1)4M-4=4M
2)6=1-2N+5
0=-2N
N=0?
Click here to see answer by Fombitz(13828)

Question 318381: Please help me identify the vertex of the parabola f(x)= (x+1)^2 + 1
Click here to see answer by Fombitz(13828)

Question 318542: I need some help figuring out how to do this word problem. The base of a triangle is 6cm greater than the height. The area is 36cm^2. How do you find the height and length of the base>
Click here to see answer by josmiceli(9645)

Question 318553: How would you factor x^5+8x^4?
Click here to see answer by Fombitz(13828)

Question 318544: How would you find the answer to this problem? The polynomial 0.041h-0.018a-2.69 can be used to estimate the lung capicity, in liters, of a female with height h in cemntimeters and age a in years. How would you find the lung capicity of a 40 year old female who is 140 centimeters tall?
Click here to see answer by Fombitz(13828)

Question 318572: The sum of two numbers is 33. Twice the first number minus the seconed number equals 18. Find both numbers.
Click here to see answer by JBarnum(2044)

Question 318559: FACTOR THE BINOMIAL
6-x^2
I know the answer is
(0.2+x)(0.2-x)
Can you please explain why that is?
Click here to see answer by Fombitz(13828)

Question 318545: This on has me stumped. Suppose it takes three days for a space vechicle to travel from Earth to the moon. About how long would it take the same vechicle traveling the same speed to reach Mercury? The distance from the Earth to the moon-240,000 miles Mercury-57,000,000,000 miles
Click here to see answer by Fombitz(13828)

Question 318139: 12x2 + 23x + 10 = 0
A. 5/4, 2/3 B. -5/12, -1/5 C. -5/4, -2/3 D. 5/4, -2/3
Click here to see answer by JBarnum(2044)

Question 318591: What is the vaule of the Y variable in the solution to the following system of equations?
3x+y=14
-3x+2y=1
Click here to see answer by jim_thompson5910(28476)

Question 318591: What is the vaule of the Y variable in the solution to the following system of equations?
3x+y=14
-3x+2y=1
Click here to see answer by Fombitz(13828)

Question 318490: how do you solve 3y+2x=-x+5 and 4x-3y=6x+y
Click here to see answer by Fombitz(13828)

Question 318585: Find an equation in standard form of the line:
a. through (2,-2) and (4,4)
b. perpendicular to y= x + 5 and through (0,-8)
Click here to see answer by Fombitz(13828)

Question 318636: Write an algebraic expression and solve the equation for: Eight less than four times a number is the same as eight times the sum of the number and two. What is the number?
Click here to see answer by jim_thompson5910(28476)

Question 318661: 2x-3(2x-5)=7-2x
Click here to see answer by jim_thompson5910(28476)

Question 318687: solve for x.
-2/3x=12
Click here to see answer by jim_thompson5910(28476)

Question 318869: Express the number 7920 in scientific notation
Click here to see answer by Fombitz(13828)

Question 318923: SIMULTANEOUS EQUATIONS
2x+3y=1
x+ y=1
Click here to see answer by Fombitz(13828)

Question 318904: a plane flies 450 miles with the wind and 300 miles against the wind in the same length of time. if the speed of the wind is 20 mph, what is the speed of the plane in the air?

Click here to see answer by Fombitz(13828)

Question 318970: step by step please.
2x+3x+4x-5=2+3+4x
Click here to see answer by jim_thompson5910(28476)

Question 318975: I am having trouble with multiplying,dividing and simplifing these problems. I can get them so far then I get lost. I have no trouble when I am dealing with smaller numbers but the larger numbers and multiple steps to get the answer gives me trouble. Can you help me out.? 1. 10y^/9v^2*81v^4/100y;2.z^2-z-6/z^2-4z+4*z-2/z-3; y^2-81/y divided by y-9/y+6; 4.x^2-4/25x+50 divided by x-2/10;5.r^2+62/r^2+3r-18 divided by r/r+3
Click here to see answer by mananth(12270)

Question 318995: Write the equation for the problem and solve. The product of two consecutive even integers is equal to 120. What are all the integers? No credit for guesses or interpolation.
Click here to see answer by mananth(12270)

Question 318972: I am working with rational expressions this week and am having trouble simplifing by removing factors of one. Could you show me how with the these problems: 1. 80v^9x^8/50v^7x^3;2. s^2-25/s^2-10s+25;3. 15w^2?375/9w^2-225
Click here to see answer by Fombitz(13828)

Question 319064: SIMULTANEOUS EQUATIONS
3c-2d=13
2c+3d=0
Click here to see answer by Fombitz(13828)

Question 318035: I need your help with this: Identify the vertex of the parabola
f(x)=(x+1)square + 1
Thank you
Click here to see answer by Fombitz(13828)

Question 319138: ... is an equation that can be used to solve the proportion 4/x = 3/10.
Click here to see answer by Fombitz(13828)

Question 319186: How can I find out what kind of equation this is y=10x^2.
Is there a formula where I can find out if it is linear, quadratic or exponential.
Click here to see answer by solver91311(16868)

Question 319200: please help me solve this equation: The sum of two numbers is 8.5, their product is 18. Find the numbers..thanks very much
Click here to see answer by stanbon(57211)

Question 319200: please help me solve this equation: The sum of two numbers is 8.5, their product is 18. Find the numbers..thanks very much
Click here to see answer by mananth(12270)

Question 319205: y=2x-12
3

Click here to see answer by jim_thompson5910(28476)

Question 319210: y=-1x-5
3
Click here to see answer by jim_thompson5910(28476)

Question 319219: Find the equation of the line passing through (-1,2) and perpindicular to y=3x+5
Click here to see answer by stanbon(57211)

Question 319266: what is 3 times the difference of 12 4/5 and 6 2/3 ?
Click here to see answer by Fombitz(13828)

Question 319301: i ask you to do this
-3(4y+5)
regards mr igge
Click here to see answer by Fombitz(13828)

Question 319325: how do you work out x6+9x5
Click here to see answer by Edwin McCravy(8879)

Question 319325: how do you work out x6+9x5
Click here to see answer by stanbon(57211)

Question 319401: How do you know when an equation has infinitely many solutions? How do you know when an equation has no solution?

Click here to see answer by stanbon(57211)

Question 319531: Find the inslope intercept form the passing through points with given coordinates. (-3,3) (2,-2) for some reason I am not getting this right.
Click here to see answer by Alan3354(30937)

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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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