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

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Question 1023541: A plot of land is 153 acres. The land is to be partitioned into lots that are 3 acres in size. How many lots will there be once the land is partitioned?

Click here to see answer by Cromlix(4381)

Question 1023965: Perform the indicated operation.
[ 1 2 ] [ 2 0 ]
| 2 3 | | 1 1 |
[ 0 4 ]
Click here to see answer by stanbon(75887)

Question 1023967: Perform the indicated operation.
[ 1 2 ] [ 2 0 ]
| 2 3 | | 1 1 |
[ 0 4 ]
a.
[3 3]
|2 0|
[3 1]
b.
[3 1]
|2 3|
[6 3]
c.
[4 2]
|1 3|
[5 2]
d.
[4 2]
|7 3|
[4 4
Click here to see answer by robertb(5830)

Question 1024464: I need to be able to help a student learn how to simplify and algebraic expression that includes fractions, however i am unsure how to do it myself-
the equation looks like this-
8/10(3/2 - 8b) + 3b -5m
Click here to see answer by josgarithmetic(39623)

Question 1025450: (5,2)9(8,3)17(7,6)..... please explain how to get the next number

Click here to see answer by Edwin McCravy(20060)

Question 1025594: Solve the systems of equation by using the graphicall method. X-4y=8, 2x+y=-2
Click here to see answer by FrankM(1040)

Question 1025951: Twice the sum of seven and a number is 52. Find the number.

Click here to see answer by FrankM(1040)

Question 1026115: 3y= 2* sq root [1-2x/(x+1)], express
X in terms of y
Step 1
9y^2/ ( 4) = 1-2x/(x+1)
9y^2(x+1)=4-8x
Pls advise how to express x in terms of y
Click here to see answer by mananth(16946)

Question 1026116: Given that x=3/2 is the only solution to equation 4x^2-ax+b=0, find
The value a and b??
Step1
substitue x=3/2
9-3/2a+b=0
if a =2, b=-6
can assumption a=2?to solve, confusion,pls help
Click here to see answer by Alan3354(69443)

Question 1026153: -1 to the 3rd power what is the answer how would you figure it out
Click here to see answer by josmiceli(19441)

Question 1026198: -10+6x-10x>6-4x+1+6x
solve the inequality
Click here to see answer by Fombitz(32388)

Question 1026198: -10+6x-10x>6-4x+1+6x
solve the inequality
Click here to see answer by kekegeter (97)

Question 1026198: -10+6x-10x>6-4x+1+6x
solve the inequality
Click here to see answer by MathTherapy(10555)

Question 969821: What is the value of the expression 4+(7xn) when n= 3
Click here to see answer by EdenWolf(517)

Question 916233: what is 7x+y+16 for x=2,y=3

Click here to see answer by EdenWolf(517)

Question 1026806: I am wondering if some can assist me in finding the solution.
Which one of the following is true about the graph of 𝑥 = 3 + |𝑦|?
A. It is the graph of a function.
B. It is symmetric with respect to the origin.
C. It is symmetric with respect to the x-axis.
D. It is symmetric with respect to the y-axis.
I believe the correct answer is D

Click here to see answer by robertb(5830)

Question 1026818: Good evening,
A horizontal line through the point (3,− 2) has equation 𝑦 = − 2.
T. True
F. False
I believe the answer is True.
Thanks
Click here to see answer by rfer(16322)

Question 1026805: I am wondering if some can assist me in finding the solution.
Suppose that 𝑓 𝑥 = 𝑥' − 3𝑥 − 2 and 𝑔 𝑥 = 4𝑥 + 1. Determine 𝑓 − 𝑔 −2 .
Here are the possible answers
A. −7
B. 1
C. 15
D. 4
Click here to see answer by Alan3354(69443)

Question 1027515: I need to simplify '2/3(12/4+2+3x)'.
What I did first was divide 12 by 4 (3) then add 2 (5), leaving the 3x alone for now. Then I multiplied 5 by 2/3 getting 10/3 as my answer. But then I doubled checked by doing Distributive property. I mutiplied 12,4, and 2 by 2/3 and then did the problem (8 / 8/3 + 4/3). Doing that I kept getting 13/3.
So I am very confused now is the answer 10/3 or 13/3? Was I not allowed to use distributive property?
Click here to see answer by josgarithmetic(39623)

Question 1027676: Solve for X, X-a^2/b^2+c^2 + X-b^2/c^2+a^2 + X-c^2/a^2+b^2=3
Click here to see answer by mananth(16946)

Question 1027675: Solve for X, x-a(b+c)/bc + x-b(c+a)/ca + x-c(a+b)/ab =3
Click here to see answer by ankor@dixie-net.com(22740)

Question 1028376: Make r the subject of the formula: V = 4/3 pi r^3
How do I even start?? Is there a kind of step-by-step formula for solving these kind of 'make subject' equations?
Click here to see answer by josgarithmetic(39623)

Question 997255: Evaluate 1+a over 2b , for a=3 and b=-5 . Write in each simplest form

Click here to see answer by EdenWolf(517)

Question 1028924: Please simplify the rational expression:[(3x+2)(x+5)]-[(x+5)(x+3)]/(3x+2)(x+5) *It is written as a fraction on my paper
Thank You
Click here to see answer by stanbon(75887)

Question 1029446: x - 5 / 2 - 7 = -4
Click here to see answer by Fombitz(32388)

Question 1029589: 1/x = 1/r + 1/s
Make r the subject
Please have explanation with steps
Click here to see answer by josmiceli(19441)

Question 1029777: (3y-1)(2y+k)=ay^2+by-5 for all values of y,what is the value of a+b?
Click here to see answer by robertb(5830)

Question 1030450: valuate the variable expression a + b + c for the given values of a, b, and c.
a = 12,897; b = 36,075; c = 7,038
Click here to see answer by fractalier(6550)

Question 1031217: Evaluate -1(2)(-4)(2)

Click here to see answer by Alan3354(69443)

Question 1031219: Solve for x 79-x=169

Click here to see answer by stanbon(75887)

Question 1031616: Evaluate (3/5)^-3/4
Click here to see answer by stanbon(75887)

Question 1031616: Evaluate (3/5)^-3/4
Click here to see answer by Alan3354(69443)

Question 1031737: Evaluate the variable expression 5a+(4b-c) when a=-2/5, b=4/5, c=1/5
Click here to see answer by Alan3354(69443)

Question 1031937: Evaluate the following expression: 2(4 - 3)�
Click here to see answer by Alan3354(69443)

Question 1032358: Two trucks are traveling in the same direction, one going twice as fast as the other. At the end of 6 hours they are 204 miles apart. How fast is each travelling?
Click here to see answer by stanbon(75887)

Question 1032532: 95/7*95/7-59/7*59/7
___________________
95/7-59/7
= ?
Click here to see answer by Fombitz(32388)

Question 1032710: Please help me solve this equation: 6A=4B
Click here to see answer by Alan3354(69443)

Question 1032836: jenny TAKES A TAXI FROM HER HOUSE. THERE IS A �2 STANDING CHARGE. THE TAXI COMPANY CHARGES �3 PER MILE(M)WHAT IS THIS AS AN ALGEBRA EXPRESSION?
Click here to see answer by jorel555(1290)

Question 1032926: What is -x*x?
Click here to see answer by josmiceli(19441)

Question 1033067: Englewood High school surveyed it's student population about their favorite sports.The 487 students who listed soccer as their favorite sport represented 17 fewer students than 3 times the number of students who listed basketball as their favorite sport.How many students listed basketball as their face write sport?
Click here to see answer by addingup(3677)

Question 1033160: Suppose someone offers Melissa a job to work for 30 days. On the first day she will be paid 1 cent, on the second day 2 cents, on the third day 4 cents, on the fourth day 8 cents, etc. If Melissa takes the job, how much is her total pay for the 30 days?
Click here to see answer by LinnW(1048)

Question 1033373: Simplify:
-24(a^4)(b^-3)
divided by
3a(x^-2)b^7
Please help, I got stuck really quickly!
Click here to see answer by josgarithmetic(39623)

Question 1033375: How can I factorise:(6a-3)x - (1-2a)
Help!
Click here to see answer by josgarithmetic(39623)

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