Questions on Algebra: Equations answered by real tutors!

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Question 154910: wats the dot mean in between 2 numbers wen given a equation......????? i really wanna kno let me give u a example 3.5 *4.6
Click here to see answer by checkley77(12569)

Question 154947: x+5/8=7/8
Click here to see answer by oscargut(891)

Question 154962: please help me with the following question with a good explanation on how to work it out for me and my son, Thanks in advance! evaluate the expression: (1000!-999!)/998!
Click here to see answer by stanbon(57387)

Question 154959: 4=4/9+y

Click here to see answer by edjones(7569)

Question 155013: if x = ((3-2root2)/(3+2root2))
evaluate x + (1/x) in the exact form
Click here to see answer by oscargut(891)

Question 155046: solve the equation for y: c (y+ t) = m
Click here to see answer by jim_thompson5910(28598)

Question 155079: Given the points (1,-1) and (5,1), find the equation for the line is slope-intercept form and point-slope form through these points.
Click here to see answer by Fombitz(13828)

Question 155081: a triangle has two equal sides and a third side that is 15 cm long. if the perimeter is 50cm, how long is each of the two equal sides?
Click here to see answer by checkley77(12569)

Question 155078: the sides of a rectangle have lengths 7,x, and x + 1. if the perimeter is 30, find the value of x.
Click here to see answer by checkley77(12569)

Question 155075: the length of a rectangle is twice its width. if the perimeter is 60, find the dimensions of the rectangle.
Click here to see answer by checkley77(12569)

Question 155085: help me name this property if 4m=-15,then-12m-45
Click here to see answer by stanbon(57387)

Question 155082: Tina,Dawn, and Harry have $175.00 together. Tina has 3 times as much money as Dawn. Dawn has twice as much money as harry. How much money does each have?
Click here to see answer by stanbon(57387)

Question 155067: the height of a tower is 3 times the height of a certain building. if the tower is 50m taller than the building,how tall is the tower?
Click here to see answer by checkley77(12569)

Question 155076: the length of a rectangle is one unit more than its width.if the area is 30 square units,find the dimensions of the rectangle.
Click here to see answer by checkley77(12569)

Question 155190: The attendance at a baseball game was 400 people. Student tickets cost $2 and adult tickets cost $3. Total ticket sales were $1050. How many tickets of each type were sold?
Click here to see answer by stanbon(57387)

Question 155084: help me name this property if 4m=-15,then-12m-45
Click here to see answer by orca(409)

Question 155185: 3+2x=5x - 9
Click here to see answer by edjones(7569)

Question 155272: The value of uncirculated "mint state-65" `950 Jefferson nickel minted in Denver is 4/3 the value of a 1945 nickel minted in Philidelphia in similar condition. Together the total value of the two coins is $28. What's the value of each coin.
Click here to see answer by Earlsdon(6287)

Question 155255: (6m+8)+(3m+10)=90
Click here to see answer by orca(409)

Question 155254: 180-5y=90-7y
Click here to see answer by checkley77(12569)

Question 155296: My son has just entered grade 8 in high school and has asked me to solve this equation,
9x²-36=9(x²-4)-9(x+2)(x-2) he says x=?
I would be greatfull for any help
Thanks
John
Click here to see answer by nerdybill(6962)

Question 155228: kindly solve these problems for me:
1. Charles and Melanie are 100 km apart and are driving at constant speeds. If they drive toward each other, they will meet in 1 hr. If they drive in the same direction, he will overtake her in 5 hr. Find their speeds.
2. Wayne invested part of his money at 8% and the rest at 6%. The income from both investments totaled $2,000. If he interchanged his investments, his income would increase by $340. How much did he have in each investment?
Click here to see answer by ankor@dixie-net.com(15660)

Question 155300: 2. the equation N=50+50Y gives the number N of stamps collected when Y is the years that passed since the collection began. Using this equation, determine the number os stamps that will be in the collection after 3 years.
3. The slope of the equation in the above problem is.
4. the equation y=240x+720 gives the cost y (in dollars) when x gadgets are produce. How many gadgets can be produce for $30,000?
Click here to see answer by stanbon(57387)

Question 155298: if the path of a frog's jump is approximated by the equation y= -0.25x^2+5x, what is the height of the frog's jump
Click here to see answer by stanbon(57387)

Question 155337: i don't get what it is asking and i have to answer this one before i can move on.
It says write an equation to show the relationship between the number of students on the trip n and the cost of the trip c.
Can someone please help me to understand this
Click here to see answer by stanbon(57387)

Question 155364: using each of these numbers once ( 15,4,10,19,22 ) with any combination of the operations of multiplication, addition, substraction, or division to make a true equation equaling 1.
Click here to see answer by oscargut(891)

Question 155361: How do I solve the following equation for P?
-3 = (4000/(130-P))* ((130+P)/(6000+10000))
Click here to see answer by checkley77(12569)

Question 155413: what steps would I take to find the value of x in the following eqution?
[6x+5]/3-3/7x=-2

Click here to see answer by stanbon(57387)

Question 155482: 10. Tom and David have 480 marbles between them. Tom arranges them in columns with 6 in each column, and David arranges them with 9 in each column. The total number of columns is 72. Express the above information in the form of an algebraic equation.
Help me! I do not have a clue and my teenager who usually helps me, is out of town!
Click here to see answer by oscargut(891)

Question 155570: 1/2x + 2/5 (x-2) = 1
Click here to see answer by checkley77(12569)

Question 155448: Hi, I am trying to help my granddaughter with her homework. She has the following equation to work out and I haven't got a clue where to start. Any suggestions would be greatly appreciated.
16jk2 + 5j x -2k x 3k
the 16jk is to the power of 2
Click here to see answer by Alan3354(30993)

Question 155441: please help me to fin the answer of this question : ab+a-b=2001, find the value of a and b. if a and b are a real number.
Click here to see answer by Alan3354(30993)

Question 155497: (Square root of 2X+3) = (square root of X+2) + 2
Can you help me solve this? I've already done some work:
1. I squared both sides of the equation and got: 2X+3 = X+2+(4 square root of X+2) + 4 because I foiled the right side, but I don't think I did it correctly
2. then, I got: X-3= (4 Square root of X+2)
Click here to see answer by checkley77(12569)

Question 155593: u/u-u+1/2=4
The professor gave this question at the end of class and he did not get to go over it. At first I tried to get rid of the two on the bottom but I got stuck when it came to getting rid of all the u's.
Click here to see answer by stanbon(57387)

Question 155618: 6-(3t+4)=-17
5
- p -10=30 , 5k +2(n-4)=15
7
Click here to see answer by jim_thompson5910(28598)

Question 155641: the length of arectangle is 3cm less than four times its width.if the perimeter is 38cm,what is the area of the rectangle?
Click here to see answer by jojo14344(1512)

Question 155676: how do you find the solution to -8-n+14=6
Click here to see answer by Alan3354(30993)

Question 155762: I am retunning to school after 15 years and I am having problems with Algebra. Please help me to understand how to simplify equations.
4x+7-15x+50-11+12x
Click here to see answer by nerdybill(6962)

Question 155753: a 120-pound student playing vollyball burns 2.7 calories per minute. if the student plays for 30 minutes, how many calories does the student burn?
Click here to see answer by checkley77(12569)

Question 155803: 4X+3=-3+2X+14-3
Click here to see answer by jojo14344(1512)

Question 155807: 62) 7/8x-1/4+3/4x=1/16+x
67) 1/3x+2/5=4/15+3/5x-2/3
72)1.7t+8-1.62t=0.4t-0.32+8
80) 2/3(7/8-4x)-5/8=3/8
please help solving all 4 thanks a million on clearing decimals and fractions

Click here to see answer by checkley77(12569)

Question 155813: Hi Sir/Ma'am,
Please assist.
I am helping my daughter who is in high school. I bought the algebrator program but it does not solve this equation:
6*6^3x=36*6^x
The book has the answer as x = 1/2 but I cannot get it.
I get x=3. What I have done is 6*6^3x divided by 36*6X equals 0
I simplyfy it and get 1*3x divided by 6*x equals 0
then transpose the 1/6 to get 2x=6
then x = 3
I forced the answer but it made no sense.
The books name is MATHEMATICS A COMPLETE COURSE WITH C.X.C QUESTIONS VOLUME 2. It has no ISBN. The author is Raymond Toolsie B Sc , MACP Published by CARIBBEAN EDUCATIONAL PUBLISHERS LTD PAGE 701 QUESTION 13 B

Please help
Reuel
Click here to see answer by jim_thompson5910(28598)

Question 155728: What is the equation for c+9=11?
Click here to see answer by HyperBrain(694)

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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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