Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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Algebra: Expressions involving variables, substitution

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Question 9785: what is the algebraic expression for the verbal expression six times a number
Click here to see answer by zach(2)

Question 9782: Please solve with work: 3/8=x+1/4
the x+1 is over top of the 4. Like a fraction or maybe it means division. I really need help with this problem. With work because then that way I can use the formula for all the other ones. Thanks so much....
Click here to see answer by Earlsdon(4898)

Question 9333: Hello, we spent an entire period trying to work this one out. PLease help me solve it. there is no division, the slash marks are fractions.
x + 5/8 + 3x/4 =2/3 +5x
Click here to see answer by rapaljer(3612)

Question 9932: write a verable expression for each algebraic expression
1. c+4
2.5x
3.z2
4.a\b
5.6y5
6.k-3
7. 5-t
8.103
Click here to see answer by lost_love719(1)

Question 10021: how can i define a variable. need an answer today now 9/7/05
Click here to see answer by huntingmaster(4)

Question 10074: Ok...here is a problem that I think I did right, but not sure. Can someone check it for me?
Simplify: (6^3)(6^-5) (x^7)(x^-3)
This is what I did. Not sure if it is right though.
6^3 * 6^-5 = 36^-2
x^7 * x^-3 = x^-21
so my answer was (36^-2)(x^-21)
If this is wrong, can someone show me how they got the answer?
Thanks
Click here to see answer by Earlsdon(4898)

Question 10233: 16m-10m=
Click here to see answer by Stxfball(4)

Question 10264: I have one problems I am helping my son with translating Algebraic Expression into phrase. I have helped him with all 24 problems but I can't get the last one. The answer is within a puzzle. problem 1.) n divided 7 means the _____ of a number and seven. (divided meaning the division symbol)
Click here to see answer by rapaljer(3612)

Question 10262: Please help me solve this equation:
Click here to see answer by longjonsilver(2297)

Question 10303: can you give me the answer on this.
evaluate each expressin if a = 4,b = and c = 7
1. 3ac
2. 5b3
3. abc
4. ab/8
5. 2a-3b
6. b4/4
7. c-a
8. 20-bc
9. ab-c
Click here to see answer by bonster(299)

Question 10309: You are driving at a constant speed of 60 miles per hour, how long will it take you to travel 270 miles?

Click here to see answer by Earlsdon(4898)

Question 10310: 1.You are driving at a constant speed of 60 miles per hour, how long will it take you to travel 270 miles?
2.You are driving at a constant speed of 65 miles per hour, how long will it take you to travel 280 miles?
Click here to see answer by huntingmaster(4)

Question 10318: simplify 2(x - 5) - 3(4x + 4)
Click here to see answer by ichudov(404)

Question 10271: 5(x-3)-7(6-x)+29=50-3(8-x)
Click here to see answer by gsmani_iyer(161)

Question 10354: -2x+10=18
Click here to see answer by arunpaul(104)

Question 10235: 2x squared plus 6x squared equals
Click here to see answer by arunpaul(104)

Question 10235: 2x squared plus 6x squared equals
Click here to see answer by rapaljer(3612)

Question 8354: 2a-5/6= 5/12
Click here to see answer by arunpaul(104)

Question 10410: Dear Tutor this is the problem:
Find three consecutive integers whose sum is 37 less than 5 times the third integer.
I need this at 8:00 tonight please work fast.
Click here to see answer by calbreez(9)

Question 10319: How do you solve 3(9k-4)-4(5n-3)
Click here to see answer by rapaljer(3612)

Question 10389: Dear Tutor,
I need help with Problem Solving : one or More Numbers. The problem is the following:
A Brand X bottle contains one dozen fewer capsules than a Brand Y bottle. Five Brand X and 8 Brand Y bottles contain 486 capsules. How many capsules are in a Brand X bottle.
Please show the steps to this problem. Also I need this by Sunday September 11, 2005. Thank you.
Click here to see answer by prince_abubu(198)

Question 10473: please teach me step by step of this equation: 2(3y+4)=32
Click here to see answer by WannabeCAgirl83(35)

Question 10611: which one is the correct one? "the square of four more than a number,"
X+4 (2) or (x+4)2 why?

Click here to see answer by longjonsilver(2297)

Question 10646: 4X+12=3X+18
Click here to see answer by WannabeCAgirl83(35)

Question 10698: How would you translate phrases into algerbraic expressions?
Example: twice a number

Click here to see answer by longjonsilver(2297)

Question 10701: nine is greater than three times a number s.
Click here to see answer by mathnerd(1)

Question 10762: My question is:
The length, width, and height of a rectanglar box are consecutive integers,and the largest dimension is k cm. Find the volume V of the box. (hint: V=lwh)

Click here to see answer by prince_abubu(198)

Question 10776: could you please show me in which order do you apply the power to?
5y to the 5th power when y = 2
do you times 5 to the 5th power then times by 2 or
do you times 5 x2 then to the 5th power
pl
Click here to see answer by rapaljer(3612)

Question 10777: what does evaluate the expression mean

Click here to see answer by rapaljer(3612)

Question 10727: what is the answer to this problem:
x-2 7/10=1 1/10
can you please answer as soon as possible..i appreciate your time thanks
Click here to see answer by Earlsdon(4898)

Question 10874: please answer and explain step by step to this problem
12-[20-2(6 squared divided 3 x 2 squared)]
Click here to see answer by Rta 14(3)

Question 10917: HOW CAN I FIND THE VALUE OF A VARIABLE. THIS PROBLEM IS IN MY GEOMTRY TEXTBOOK .I TAKE GEOMTRY BUT IT ALSO INCLUDES ALGEBRA?
I HAVE A LINE SEGMENT AND P IS THE MID POINT. FOR ONE HALF THEIRS AN EXPRESSION WHICH IS 4X+3 AND ON THE OTHER HALF IS 8X-11. SO I NEED TO FIND THE VALUE.?
Click here to see answer by rapaljer(3612)

Question 11025: 4/a =
could please answer this question as soon as possible , thank you

Click here to see answer by longjonsilver(2297)

Question 11036: a-[a-2b+{2c-b-(a-3b-ca)}]
Click here to see answer by longjonsilver(2297)

Question 11235: -6x-2(-5x + 9)-3x
I just can't figure it out. I tried to do it, but I don't know how to arrange it to where I can subtract the like terms.

Click here to see answer by elima(1433)

Question 11292: the gym is 21 years newer than the auditorium. the gym is also 1/4 as old as the auditorium. how old is each building?
Click here to see answer by askmemath(368)

Question 11291: an oil painting is 16 years older than a water color by the same artist. the oild painting is also three times older than the watercolor. how old is each?
Click here to see answer by askmemath(368)

Question 11352: X+4/6=X-3/5
Click here to see answer by askmemath(368)

Question 11367: I cannot figure out how to start this equation
3(x+4 -1) =15 The (x+4-1)is divided by 2
2

Click here to see answer by elima(1433)

Question 11390: The problem is as follows-
Solve by useing Substitution:
x+y=20}
5x+10y=200}
I made it so the equation read y=20-x
so then i substituted that for the equatioin 5x+10y=200. It eventualy came out to -5x=0. But just today my algebra2 teacher said that is a wrong outcome for any problem like this. Ive done it over and over but I'm still geting that answer. Can you please help me?
Click here to see answer by tishy(4)

Question 11422: (-4)(7)+(-4)(-9)
Click here to see answer by roxy9229(32)

Question 11443: Can you please explain how the equation (2) has been derived from equation (1)? I know the answer is correct, but don't know how to get from one to the other.
Equation 1:
Equation 2:
Many thanks
Click here to see answer by Earlsdon(4898)

Question 11542: y(2x+1)-3x=8
How do you find the value of y in this equation?
Thanks
Click here to see answer by akmaths(3)

Question 11591: I am very confused on finding the missing number. Finding x. Here is the question -2m=16m-9 here is what i have tried -18m=-9 m=1/2. Can you help?
Click here to see answer by Earlsdon(4898)

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