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

Tutors Answer Your Questions about expressions (FREE)

Question 84750: I WOULD LIKE SOME HELP ON THE FOLLOWING QUESTION PLEASE.
Find the GCF.
36hk^3, 60k^2m, 84k^4n
Click here to see answer by Edwin McCravy(8879)

Question 84748: The numbers 3, 5, and 7 are factors of n. Find four other factors of n besides 1.

Click here to see answer by Edwin McCravy(8879)

Question 84946: Tutor can you tell me if I have simplified this expression,writing the result using a positive exponent? thank you

Problem (z^5x^5)-3
answer -3 + z^5x^5
Click here to see answer by stanbon(57219)

Question 84987: (–1)(–6) + 18
Click here to see answer by jim_thompson5910(28476)

Question 85080: Hello out there,I'm having some problems that I need help with,the first one is,Express 0.0049 in scientific notation.The next one is,Express 7,200,000,000 in scientific notation.Next one is,A rectangle has side length 30 mm and diagonal length 34 mm.Find the length of the other side of the rectangle to the nearest whole number.And the last one is,A telephone pole is supported by a wire of length x.If the base of the wire x is 40 feet from the pole,which is 70 feet tall,what is the length of the wire to the nearest whole number.Thank you to whoever can help me.
Click here to see answer by checkley75(3666)

Question 85426: List the terms of the following expression.
5q2 – q + 9

Click here to see answer by stanbon(57219)

Question 85424: Evaluate. (–4)(8) – 18
Click here to see answer by stanbon(57219)

Question 85423: Determine the maximum and minimum values for the following set.
8, –24, 46, 14, –10, –6

Click here to see answer by stanbon(57219)

Question 85421: Kit got 74/80 on an exam, meaning that she earned 75 points out of 80 possible. Write the decimal equivalent of this fraction.
Click here to see answer by Edwin McCravy(8879)

Question 85420: Evaluate. 42 + 2•7 – (5 • 4 – 15)
Click here to see answer by praseenakos@yahoo.com(507)

Question 85419: Divide. Write the result in simplest form. 8/13 divided by 8/23
Click here to see answer by praseenakos@yahoo.com(507)

Question 85416: Evaluate. (5 • 2 + 1)2
Click here to see answer by scianci(186)

Question 85580: evaluate
4x4^2-9x2
Click here to see answer by jim_thompson5910(28476)

Question 85579: 4^2+2x7-(5x4-15)
Evaluate
Click here to see answer by jim_thompson5910(28476)

Question 85764: Rewrite -7/[-7] without absolute value bars.
Click here to see answer by Nate(3500)

Question 85819: 2^4*2^5=
b*c^2*b^6*c^2=
Click here to see answer by praseenakos@yahoo.com(507)

Question 86731: The variable x is 4 less than the variable y.
1. If the variable t is multiplied by 5, the result is equal to the variable R.
2. If 3 is subtracted from the product of the variables x and y, the result is equal to 4 times the variable z.
3. The quotient of the variable x with the variable y is 2 more than 0.7 of the variable z.

Click here to see answer by stanbon(57219)

Question 86911: Tutor could you please help me to simplify the following?
12x^2+4x-1/2x+1
and
x^2+3x-4/x^2-x-20
Thank You
Click here to see answer by jim_thompson5910(28476)

Question 86907: Tutor: Can you help me simplify this expression?

9(x-7)(x+7)/3(x-7)

Thank you
Click here to see answer by bucky(2189)

Question 86912: Tutor could you help me please: I need to multiply and simplify the following:
6x^2/10x^3*5x/12
AND
9/y-6*y/5
Thank you!!!!
Click here to see answer by stanbon(57219)

Question 86958: Tutor, could you help me please? How do I add and simplify the following problem? Thank you
3p/2+11p/2
Click here to see answer by 303795(595)

Question 86982: Tutor could I please get your help? My problem is: how do I simplify this expression: 3y^2+5yz+2z^2 over 2y^2+3yz+z^2
Thank you!
Click here to see answer by Earlsdon(6287)

Question 86982: Tutor could I please get your help? My problem is: how do I simplify this expression: 3y^2+5yz+2z^2 over 2y^2+3yz+z^2
Thank you!
Click here to see answer by stanbon(57219)

Question 86979: Tutor could you please help me with this problem, my practice worksheet asked me to "perform the indicated operation"????
thank you
3/2b minus 5/3b^3
Also what is the LCD for 7over a^2+2a-63*8 over a+9
Click here to see answer by stanbon(57219)

Question 86976: Tutor could you help me please? How do I subtract:
4x+1over25x^2+15x+2minus3x-2over 30x^2+11x+1
Thank you
Click here to see answer by stanbon(57219)

Question 87032: tutor can you help with these 2 problems I have done them several times and come up with a different answer each time and none of them are correct

1) 4-(5-55t)=22t+14

2) 5[2-16(a-16)]=16(5a+2)+1378

Click here to see answer by stanbon(57219)

Question 87021: 30x^3 y^4
6x^9 y^-4
Click here to see answer by jim_thompson5910(28476)

Question 87209: Hi! I'd appreciate any help with this one.
5a^2 - 20/3a^2-12a divided by (a^3+2a^2/2a^2-8a * 9a^3 + 6a^2/ 2a^2-4a
I know the answer is 4a^2/9(a-1) but, I don't know how to get there. Or how to get rid of the 5 and how to get the (a-1).
Thanks so much for your help!
Click here to see answer by longjonsilver(2297)

Question 87660: [m] = 3m if m is odd
[m] = 1/2m if m is even
[9]x[6] is equivalent to
a. 81
b. 54
c. 27
d. 18
e. 6 (can't remember)
answer is 27 but I don't have explanation from practice test

Click here to see answer by rapaljer(4667)

Question 88094: Hello Tutor,
I am in need of serious help I hope you can guide me to what I am doing wrong.
The question from the textbook is:
Solve the following equation for x and check your results.
Problem:
3x-5(3x-7)=2(x+9)+45
I have solved and got -7 and 7 I am not sure that either one of these is correct because I can not seem to get it to check out. Would you please show me what I am doing wrong on this equation. I am so confused with the possitives and the negatives. Thank you for the help.
Click here to see answer by ankor@dixie-net.com(15624)

Question 88118: problem
I am trying to explain how to simpliy expressions
I have the problem, the book page 412 does not explain just how the answer was receive
I understand 7x4=28 power etc.
but not how
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88361:
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88273: Good day to all,I need some help with some problems,the first one is,Simplify:(6x-2)+(2x+4).The second one is,Simplify:(f^2+4f-1)+(2f^2-3f+2).The next one is,Simplify:(5+2a+3a^2)-(a^2+a-6).And the last one is,Solve the equation:4(x-2)=0.Thanks for anyone who help.
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88427: The equation of a circle with centre O(0, 0) is x² + y² = 10. The points C(3, 1) and D(1, -3) are the endpoints of chord CD. EF right bisects chord CD at G. Verify that the centre of the circle lies on the right bisector of chord CD.
thank you
Click here to see answer by stanbon(57219)

Question 88458: Good day to all,I need some help with some problems,the first one is,Simplify:x(4x^2+3x-5)-2(4-x^2).The next one is,Find the product:(b+2)(b+6).The third one is,Find the product:(7x+1)(x^2+1).And the last one is,Find the product:(2x+6)(x-10).Thanks to whoever can help me.
Click here to see answer by stanbon(57219)

Question 88119: Hello out there,I need some help with some problems,the first one is,Factor completely:6y^2-2yz.The next one is,Factor completely:8g^2j-12h^3hj.The third one is,Factor.Write prime if the expression cannot be factored :s^2-s-6.And the last one is,Factor.Write prime if the expression cannot be factored:y^2-4y-5.Thanks for whoever can help.
Click here to see answer by elima(1433)

Question 88520: Please help me solve this equation:
\frac{3x^2–26x+80}{(x-6)(x-4)(x+2)} - \frac{3}{x + 2}

the final answer should be written as:
\frac{a}{x^2+bx+c}
Here a,b and c are ordinary numbers.
Click here to see answer by jim_thompson5910(28476)

Question 88539: Please help me solve this equation:
\frac{6x^2 + 6x + 42}{(x+5)(x + 2)(x - 4)} - \frac{6}{x+5}
Answer should be written as:
\frac{a}{x^2+bx+c}
Here a,b and c are ordinary numbers.
Click here to see answer by jim_thompson5910(28476)

Question 88621: Hello,
can someone tell me if I did this right.
thank you
Find for the following set of numbers:
–3.5, –1.4, –0.5, 3, 5, 1, 2
=-3.5+(-1.4)+(-0.5)+3+5+1+2
=-4.9+2.5+5+1+2
=-4.9+2.5+8
=-2.3+8
=5.7

Click here to see answer by jim_thompson5910(28476)

Question 88640: tutor could you help me please?
If x=3 and y=2, then 4x+3y/x-y =??
Thank you verymuch for your help!!!
Click here to see answer by jim_thompson5910(28476)

Question 88657: Tutor If you can please help me in finding the equivalent to this expression...thank you very much
100s^3-80s2+20s over 10s^2
Would it be 10/s-80s^2+20s
Click here to see answer by jim_thompson5910(28476)

Question 88771: 4(2-x)=3(x-3)
Click here to see answer by bucky(2189)

Question 88936: These are on exponentials with logs; in case stan happens to see this, thanks alot for your help- I had to use my moms' last paycheck (she had to leave work to have surgery done on her anuerysms) to pay $400 for this class to make sure I have this Algebra II credit to graduate this upcoming year. You taking out time to do those 5 little problems were a BIG help and may god bless you.
2^x = 30
5^x - 1 = 3^x
3.5^3x + 1 = 65.4
16^x - 4 = 3^3 - x
7^x - 2 = 5^x

Click here to see answer by stanbon(57219)

Question 88927: How would I solve this?
Thank you
Evaluate fraction 2m-5n/n+3p if m = –2, n = 4, and p = –1.
Click here to see answer by tutor_paul(490)

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