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

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Question 318337: If you are traveling 69 miles per hour on a highway in Canada,how fast are you traveling in kilometers per hour? (Use k =1.61r, where r = rate in miles per hour and k = rate in kilometers per hour)
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Question 318331: 6a-{3b-6[a-(b+5a)]}
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Question 318338: Find the total cost of tiling a triangle area having a base length of 3 meters and a height of 8 meters if it costs $3.88 to tile one suare meter. Round to the nearest cent.
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Question 318330: 4(7-y)-5(1+4y)
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Question 318324: -2x(3x-4y+3)
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Question 318525: How do i evaluate (u3 - 7u - 6) if (u)= -2?
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Question 318754: Given h(x)=3x^2-2x+1, Find h(3)
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Question 318854: what is the excluded value?
2x
----
1-2x

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Question 319163: Simplify the algebraic expressions containing exponents, answer with positive exponents only. (not quite sure where this would go under category wise)

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Question 319386: Need help please: Translate into an algebraic expression
Four more than three times a number (use x as the variable)
Click here to see answer by Alan3354(31518)

Question 319524: I have a math problem that I have to place the parenthesis in the correct spot to get a certain answer.
6-5*2+2= -6
Where do the parenthesis go to make this problem correct?
Click here to see answer by nerdybill(7003)

Question 319560: In a shipment of 156 apples a grocer found 4 rotten apples for every 9 good ones. How many rotten apples were there in the shipment?
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Question 319894: Hello! My name is Laila. I need help with this question: Evaluate the following expression 8m for m=7?

thank you so very much.!!!!!
Click here to see answer by rfer(12729)

Question 319946: solve for t
26=6(t+6)-8t
simplify as much as possible
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Question 319946: solve for t
26=6(t+6)-8t
simplify as much as possible
Click here to see answer by Sunny Day(15)

Question 320070: (3x+20) raised to the power of eight
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Question 320088: simplify by removing brackets-3x-(4y-(2x+(x-y-x)))
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Question 320178: This year, your brother Jack will be 2 years from being twice as old as your sister Jen. The sum of Jacks' age and three times Jen's age is 66. How old is Jen?
Click here to see answer by ankor@dixie-net.com(15746)

Question 320553: multiply (2x+7y)(2x-7y)
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Question 320553: multiply (2x+7y)(2x-7y)
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Question 320562: how to solve c=8d, for d
is it d=c/8?
Click here to see answer by checkley77(12569)

Question 320573: simlify the equation 10-[3.3+5(8-3)=
Click here to see answer by jim_thompson5910(28708)

Question 321161: Solve for r. H= 1/2r + 3b -1/4
I have r= 12b-4h-1/2 (everything is over 2 in fraction form) is this right?
Click here to see answer by Alan3354(31518)

Question 321161: Solve for r. H= 1/2r + 3b -1/4
I have r= 12b-4h-1/2 (everything is over 2 in fraction form) is this right?
Click here to see answer by mananth(12270)

Question 321407: (-2B^2/a^3)^2
Click here to see answer by checkley77(12569)

Question 321585: Simplify
4{3[5(y-3) + 9] + 2(y + 8)}
Click here to see answer by unlockmath(1614)

Question 322103: This is basic, but I want to know the logic/rules at each step to know how how arrive at the answer:
(X * 1.81267) + X = 600
Click here to see answer by checkley77(12569)

Question 322223: solve for T
V= ((2P+T)/T)
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Question 322324: What is the answer of square root of x times x

Click here to see answer by mananth(12270)

Question 322589: In evaluating the problem x+y/10 where x=58 and y=12, how would you do this? I do not understand what "evaluate" means in algebra. Thanks so much for your help. I am trying to study for my final exam and I am an online student. I have never done algebra before and I am totally lost on this one.
Click here to see answer by mananth(12270)

Question 322585: Let f(x) = 1/x. Find value of f(x+h)-f(x)/h.
Click here to see answer by Fombitz(13828)

Question 322937: simplify
(a2b^3c/2b^2c^3)^4

Evaluate
(1/3)^3 + 5/27 – 1/3 x (1/9)^2
Click here to see answer by Fombitz(13828)

Question 323073: 11z+16x²-3yz+6x-8y² Evaluate if x=-2 and y=-3 and z=-5
Click here to see answer by mananth(12270)

Question 323283: solve 5x^2-x-6=0
rearange into standard form
2x-3=x^2
Click here to see answer by Alan3354(31518)

Question 323283: solve 5x^2-x-6=0
rearange into standard form
2x-3=x^2
Click here to see answer by jim_thompson5910(28708)

Question 323619: Please help me simplify the following expression
_2q__ - _q__
7 6 +__8_
1-Q
Click here to see answer by JBarnum(2044)

Question 323617: Please help me simplify the following complex fraction:
x- __1_
w
__________
x+ __1_
w
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Question 323616: please help0 me simplify the following complex fraction
__x+7_____
x to the forth
_______________
42+6x
Click here to see answer by Fombitz(13828)

Question 323809: Can somebody Please help me solve this problem?
Evaluate
((-2)^2-3)^2+4x2
( )
Click here to see answer by msgmhenderson(11)

Question 324415: both circle have the same center and the radius of the larger circle is R. if the radius of the smaller circle is 3 units less than R, which of the following represnts the area of the shaded regions
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Question 323382: FOUR TIMES THE SUM OF SOME NUMBER PLUS 3 IS EQUAL TO 8 TIMES THE NUMBER MINUS 16
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Question 324500: -18 ≤ x
Click here to see answer by JBarnum(2044)

Question 325079: (-16)^1/4 how do I evaluate this expression
Click here to see answer by Alan3354(31518)

Question 325080: simplify the expression. write the answer with positive exponents. Assume that all variables represent positive real numbers
(-27x^9)^1/3
Click here to see answer by Alan3354(31518)

Question 326248: Evaluate the following expression for x = -2, y = 3, and z = -4
5(3x + 2) + 4y – 2xz
Click here to see answer by mananth(12270)

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