Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Question 77582: 2x*-3x-4 x= -3
Click here to see answer by jim_thompson5910(35256) About Me 

Question 77754: Please help. How do I do this?
Simplify the complex fraction.
each of these are underlined except for the last one.
w+3
4w
w-3
2w

Click here to see answer by jim_thompson5910(35256) About Me 

Question 77775: simplify the expression
Square root(16a^4x^2)

Click here to see answer by Edwin McCravy(20060) About Me 

Question 77956: Which of the fractions 4567890123/780123456 and 4567890124/780123458 is greater. Give a algebric proof i.e. which avoids multiplications of the numbers involved.
Click here to see answer by jim_thompson5910(35256) About Me 

Question 78069: algebraic method to solve?
2.9(x+8.1)=7.8x-3.95

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Question 78404: Solve v = LWH for W
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Question 78405: If Celsiusis -100 degree/boils what is fahrenheit?
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Question 78410: Find the slope of the line that passes through the given points.
(0,0), (3,9)

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Question 78602: Please help me help my daughter with rational expressions.
x+1 over (x+3)(x-3)plus 4(x-3) over (x+3)(x-3)plus (x-1)(x-3) over (3-x)(x+3) =?

Also,
6 over x-y plus 4x over y^2 - x^2 =?

Click here to see answer by stanbon(75887) About Me 

Question 68020: Find the nex three elements in each pattern.
216, 36,6, _________,___________,____________
4,5,9,14,23,_________,__________,____________
1/8, 1/10, 1/12, __________,___________,____________

Click here to see answer by stanbon(75887) About Me 

Question 78604: I know the "backward" way in getting the answer to this problem, but I create the formula for this problem:
A restaurant owner wants to purchase some new tables, chairs and dinner plates. She plans to buy four chairs and four plates for each table. Sh also needs 20 additional plates to keep for breakage. If a table costs $100, a chair $50 and a plate $5, how many of each can be bought if she takes out a loan for $6,500.
Here are the questions for this problem :
A: What do we need to find out?
B: Create the formula for this problem (Hint - Create a table using the following headings: Item, number, value, Total value. Create the unknown value and then solve)
C: Solution: How many plates at what cost?
How many tables at what cost?
How many chairs at what cost?
I got 100 plates @ $5/plate = $500
20 tables @ $100/table = $2000
80 Chairs @ $50/chair = $4000
Just need to know how to write the formula into how to solve it.
HMMMMM.
Much appreciated

Click here to see answer by bucky(2189) About Me 

Question 78686: 3.9(x-2)-1.4x=0.7x+1.38
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Question 78921: 2 cars leave for a destination 48km away. Car B going at a speed of 64km/hr started 12 minutes ahead of Car A which goes at a speed of 100 km/hr. How long will it take Car A to overtake Car B?
Click here to see answer by Edwin McCravy(20060) About Me 

Question 79169: Compute
23-(-7)-16+(-2)

Click here to see answer by checkley75(3666) About Me 

Question 79156: This is an interest question. Person has #55 to invest at 3% accrued monthly. How much money will there be in the account for three months, six months and one year?
Click here to see answer by mathdoc314(58) About Me 

Question 79495: Solve this proportion:
Solve for X:
x-3/x = 4/7

Click here to see answer by checkley75(3666) About Me 

Question 79530: Which of the following is not an expression?
A) 4(y + 1)
B) x + 2y
C) ab = 6
D) a + b + c

Click here to see answer by erimir(14) About Me 

Question 79762: Two cyclists start biking from a trail’s start 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 hours after the first cyclist who is traveling at 6 miles per hour. How much time will pass before the second cyclist catches up with the first from the time the second cyclist started biking?
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 80138: Evaluate the expression 3 + x for each number in the set
[-1, -2, -3, -4, -5].

Click here to see answer by sofiyacherni(99) About Me 

Question 80137: Evaluate the expression 3 + x for each number in the set
[-1, -2, -3, -4, -5].

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Question 80213: Hi there! I am a Parent who is in need of some assistance. It has been years since I've done this, and I need a way to help to explain it to my Daughter, who is in the sixth grade. I have no idea of how to even attempt to show her, but if I see the work and how it is done, I'm sure I will remember. I'm going to list the three problems that she has. Thank you.
1). 5X - 13=27
2). 3/8W + 7=65
3). d/4 + 18 =24

Click here to see answer by tutor_paul(519) About Me 

Question 80398: 5%284x+-+2%29+=+2x+-+8
Click here to see answer by erimir(14) About Me 

Question 80399: translate and solve
when twice a number is subtracted from twenty-four, the result is six times the number. find the number

Click here to see answer by tutor_paul(519) About Me 
Question 80399: translate and solve
when twice a number is subtracted from twenty-four, the result is six times the number. find the number

Click here to see answer by bucky(2189) About Me 

Question 80567: Solve this equation.
c^2 + 1/4 c -1/8=0

Click here to see answer by tutor_paul(519) About Me 

Question 80624: Please simplify the expression:
4xoverx%5E2-9multiplied+by+x-3over8x%5E2%2B12x

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 81235: How do you solve algebra expressions and equations such as 10+4h=5h+6 using the algebra method?
Click here to see answer by stanbon(75887) About Me 

Question 81254: 2.4/4= x/7
find the
unknown number round to nearest hundredth when needed

Click here to see answer by checkley75(3666) About Me 

Question 81253: 55 to 100 ratio as a
fraction in lowest terms

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Question 81561: solve for x
5x - 7 = -7 + 2(x + 3)

Click here to see answer by Mathwiz101(4) About Me 

Question 81767: How do I multiply and solve 3xy2(5xy – 4x + 6y)?
Click here to see answer by rapaljer(4671) About Me 

Question 81778: Simplify
(a-8)(a+6)

Click here to see answer by ssonygill(12) About Me 

Question 82611: Express each ratio as a fraction in lowest terms.
5 to 7

Click here to see answer by vertciel(183) About Me 

Question 83170: 70-10(3) =70-30 =40

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Question 83192: combine like terms 6a2+4a+5+3a+7a-2
Click here to see answer by checkley75(3666) About Me 

Question 83350: 5(x-3)= -30
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Question 83406: Evaluate 4x - y if x=3 and y=-2.
Click here to see answer by funmath(2933) About Me 

Question 83747: (5y6)(3y) - (y4)(8y3)
Click here to see answer by tutorcecilia(2152) About Me 

Question 83822: How would I evaluate an expression with a mixed-number exponent, such as 8 to the one and one-third power?
Click here to see answer by josmiceli(19441) About Me 
Question 83822: How would I evaluate an expression with a mixed-number exponent, such as 8 to the one and one-third power?
Click here to see answer by Earlsdon(6294) About Me 

Question 83756: (4.7*10^6)*(7.5*10^-6)
Click here to see answer by checkley75(3666) About Me 

Question 57862: simplify 3y-(6y+2)(-y)
simplify (-7x+x^2)(-x)+x^2 that is x squared ^2 Thanks for all your help

Click here to see answer by vertciel(183) About Me 

Question 84061: How do you solve this expression?
2x - 12 = 5y

Click here to see answer by Edwin McCravy(20060) About Me 

Question 84178: Find the GCF of 90m2np3 and 150mn3p2.
Click here to see answer by rapaljer(4671) About Me 

Question 84173: Evaluate 4^-5
Click here to see answer by rapaljer(4671) About Me 

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