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

Tutors Answer Your Questions about expressions (FREE)

Question 549717: which algebraic equation best describes the total growth (T) in height of pine trees over a 3-year period, if g equals the rate of growth in centimeters per year?
Click here to see answer by Theo(13342)

Question 549983: which of the following is a rational number?
a.√2
b.√pi(3.14)
c.√7
d.√5/√25
e.√64/√49
my act aNSWER key has e, i'm not sure if its right though and how it is a rational number. so an explanation would be much appreciated.
Click here to see answer by scott8148(6628)

Question 550278: 90.) Find the value of m if 6m = 14m � 16.
Click here to see answer by oberobic(2304)

Question 550276: 78.) Which of the following expressions is equal to 6 � 4(x + 3)?
A. 4x + 3
B. 4x - 9
C. -4x + 9
D. -4x - 6

Click here to see answer by oberobic(2304)

Question 550569: How do I get the answer for -30/t(t+4)^2, for t=-6?
Click here to see answer by nerdybill(7384)

Question 550795: kindly evaluate (-8)5(1)8
Click here to see answer by mathstutor494(120)

Question 551094: Insert parentheses to make each statement true.
1. 8+12/4*5=1
2. 6*3+1+1=25
Click here to see answer by jim_thompson5910(35256)

Question 551190: how do I get the answer to -30/t(t+4)^2, for t = -6
Click here to see answer by jim_thompson5910(35256)

Question 551267: HI
I am trying to prepare myself for math classes, and I came over this exercise which I do not know how to solve. The chapter is about simplifying algebraic expressions, and I do understand the basics, but not when the questions are a bit more complicated .
I am suppose to simplify this:
(-5z)(2z^2)
thank you in advance
Click here to see answer by Alan3354(69443)

Question 551317: I'm not sure how to do this so could you please help?
Solve 9 -(3-x) = 14
Click here to see answer by mathstutor458(57)

Question 551317: I'm not sure how to do this so could you please help?
Solve 9 -(3-x) = 14
Click here to see answer by MathTherapy(10555)

Question 551840: Express the ratio of 6:14 as a percent.
Click here to see answer by jim_thompson5910(35256)

Question 551784: Short Answer: Raise the quantity in parentheses to the indicated exponent, and simplify the resulting expression. Express answers with positive exponents (32x^-5y/128x^-5y^4)^3
(32x^-5y)^3
-------------
(128x^-5y^4)
Equation has parentheses around entire problem not around both equation only around entire problem.

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

Question 552016: If f(x) = x + 4, find f(3). (1 point)
1
7
�1
12
Click here to see answer by solver91311(24713)

Question 552425: Please help me find the product: (b+5)(6b-7)
Click here to see answer by jim_thompson5910(35256)

Question 552425: Please help me find the product: (b+5)(6b-7)
Click here to see answer by stanbon(75887)

Question 552380: evaluate. please show all of your work
-6/6x-x^2+(-2 for x=4
Click here to see answer by JBarnum(2146)

Question 552619: insert grouping symbols to make statement true
12- 2 squared �5= 20
Click here to see answer by fcabanski(1391)

Question 552627: How can I rewrite the expression using parentheses to get the given value of 28-3x3+4 with the value being 7?
Click here to see answer by jim_thompson5910(35256)

Question 552701: How would I solve (b^4)^6*(b^2)^4
I know the answer is "b to the 32" I need to know how to get there.
Click here to see answer by Alan3354(69443)

Question 552701: How would I solve (b^4)^6*(b^2)^4
I know the answer is "b to the 32" I need to know how to get there.
Click here to see answer by Earlsdon(6294)

Question 552746: Please help:::WHICH EXPRESSION SHOWS 3(X PLUS Y)IN ITS SIMPLIFIED FORM?
Click here to see answer by jim_thompson5910(35256)

Question 551948: Rewrite expression without parentheses. Simplify. 22-(60x-41)
Evaluate expression. 1.7-(1.6-20.2)

Click here to see answer by jim_thompson5910(35256)

Question 552511: Evaluate the two given expressions.
1. ^6C^3
2. ^7P^2
Click here to see answer by jim_thompson5910(35256)

Question 551720: Evaluate -10/5x-x^2+5 for x= -2
Click here to see answer by jim_thompson5910(35256)

Question 552843: evaluate and, if possible simplify.
12/-x-3 for x=-3
Click here to see answer by jim_thompson5910(35256)

Question 552837: simplify. follow the order of operation
-48/(7-9)^3-2[1-5(2-6)+3^2]
Click here to see answer by stanbon(75887)

Question 552890: -5^2
Click here to see answer by jim_thompson5910(35256)

Question 554419: what is the answer of
1.(x/2+y/3)(x/2-y/3)
2. 8m-{-[-(-2mn+n)+(-4n+6m)]}
3.-{-[y+(-2x+5y)-3x]+9y-6x}
Click here to see answer by Maths68(1474)

Question 554594: Solve the system
{ y = x + -2
y = -2x + 7
x = [ ]
y = [ ]
Click here to see answer by stanbon(75887)

Question 554591: Find three ordered pairs that satisfy the equation.
y = 5x + 6
gruffin@comcast.net

Click here to see answer by stanbon(75887)

Question 554843: Please help me solve this problem. -6+5(2x-8)
Click here to see answer by jim_thompson5910(35256)

Question 555017: ((2y^2-7y-15)/(3y^2-8y-3)) X ((9y^2-1)/(4y^2-9)) / ((y^2+3y-10)/(2y^2-9y+9))
It say to complete it but not to multiply factors.
And also everything is squared, the -7y or whatever after the ^2 is not included in the exponent.
Click here to see answer by Theo(13342)

Question 555275: simplify -5^2
Click here to see answer by jim_thompson5910(35256)

Question 555493: (x squared + 5y) squared
Click here to see answer by edjones(8007)

Question 555829: 8x + 5y - 4z + 9y -3x + 13z =
Click here to see answer by jim_thompson5910(35256)

Question 555078: x - 3 (x-2) = 7x - (2x + 5) solve for x (I don't understand how to get to the solution although my maths teacher has explained it many times I don't understand the way he explained it)
Click here to see answer by jim_thompson5910(35256)

Question 557079: Solve: 2(c-6) + 7c + 7c = 5 -3(c-2)
Click here to see answer by nihar_pp(1)

Question 557549: simplify
3(4x-2)-6(x+1)-11x
Click here to see answer by jim_thompson5910(35256)

Question 557927: i understand how to add multiply and divide integers( neg. and pos.) numbers.However there is a whole chapter devoted to prob with par. and ive tried for hours to figure out what im doing wrong. 7+(-8)divided by 4 =. ok 7+-8=1 and four divided my one is four.. it says im wrong.. what am i doing wrong.also my key board doesnt have a division sign. Tanya
Click here to see answer by scott8148(6628)

Question 558738: 5r=45

Click here to see answer by rfer(16322)

Question 559664: please help me solve this equation -8 + 5 (g + 2) + -2
Click here to see answer by Earlsdon(6294)

Question 559657: Estimate the value of 100 1/3
how did you get this answer
Click here to see answer by richard1234(7193)

Question 560241: please help me solve -14+(-20)+75+(-43)
Click here to see answer by Maths68(1474)

Question 560241: please help me solve -14+(-20)+75+(-43)
Click here to see answer by rapaljer(4671)

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