Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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Algebra: Expressions involving variables, substitution

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Question 49852: I need some help in this numerical expression; evaluating numerical expressions: [(7-4)^2+3]15
Click here to see answer by tutorcecilia(2042)

Question 49950: 2x+y=4
-2x+2y=12
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Question 49947: One endpoint of a segment is (12,-8). The midpoint is (3,18) Find the coordinates of the other endpoint.
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Question 50114: p^19p^4/p^6
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Question 50080: What would an algebraic expression for two fifths the cube of a number?
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Question 50078: variables and expressions....
evaluate this espression=base 11 exponent 2
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Question 50079: What would an algebraic expression for two fifths the cube of a number?
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Question 50052: Kyle had 36 books in his locker. Some were library books, some were textbooks, and the rest were telephone books. The number of library books and telephone books combined equals twice the number of textbooks. The number of textbooks and telephone books combined equals three times the number of library books. How many of each type of book were in Kyle's locker?
Click here to see answer by Paul(988)

Question 50145: How TO TRANSLATE EACH ALGEBRAIC EXPRESSION INTO WORDS
a+6
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Question 50248: i need help on the problem -10a(2-a)
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Question 50248: i need help on the problem -10a(2-a)
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Question 50190This question is from textbook Geometry
: x+3
---- =3
2This question is from textbook Geometry

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Question 50330This question is from textbook
: I am in college and im barely starting algebra and i dont know how to solve any problems at all. so i was wondering if you could help me. they go like this 5x-1/3 or like 2/x + 5x to the fourht powere -y. so as soon as you could help me please contact me back. ty =)This question is from textbook

Click here to see answer by stanbon(26259)

Question 50328: Evaluate the expression for the given values of the variables.
5x+2 over y, when x=-2 and y=-4
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Question 50329: Simplify the expression: -15x divided by 3
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Question 50466This question is from textbook

: If you could please help me! I forgot how to do expressions
21-13+8=
thank you
loganThis question is from textbook

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Question 50430: 3(10-6)cubed + 15
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Question 50424This question is from textbook Algebra 1
: How do you define a variable & write an algebraic expression for
10 plus the quotient of a number and 15? Thank you!! I need this asap!!!!
This is a Study Guide & Practice Workbook Prentice Hall Mathematics Algebra 1This question is from textbook Algebra 1

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Question 50511: Simplify the variable expression:8(-t)(-t)
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Question 50512: Simplify the variable expression:-4(a)(-a)(-a)
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Question 50514: Simplify the variable expression: (5)(-w)
Click here to see answer by Nate(3495)

Question 50410This question is from textbook Study Guide
: Hi, I need help solving this solution.
If P divided by 5=Q, then P divided by 10=
Thank YouThis question is from textbook Study Guide

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Question 50516: I am working with Translating Sentences into Equations for algebra 1, twice a number is 12 more than five times the number can you help?
Click here to see answer by stanbon(26259)

Question 50303This question is from textbook Algebra 1

: x= 12 y=8 z=3

(x/y)2 -3y-z/(x-y)2 =
This question is from textbook Algebra 1

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Question 50570: Please help me solve this equation 1/a+1/b=1/c solve for c look so easy but I can't solve it...
Thank you!
Click here to see answer by checkley71(8405)

Question 50599: Evaluate the algebraic expression 5ac/2(ca) if a =6 and c= 8?
Click here to see answer by Nate(3495)

Question 50622: Simplify the expression completly: (12m + 4n)+(3m+7n)?
If you had 450 dollars in your bank account that pays interest at 3% annually how much will you have after 2 years?
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Question 50720This question is from textbook Glencoe Algebra 1
: what is the product of 5 and m plushalf of n written in an algebraic expression?This question is from textbook Glencoe Algebra 1

Click here to see answer by seawind(8)

Question 50770: if x is any interger, then 1.x=x.so when you see x in a p0roblem you can change it to 1x. you can also change a to 1a,a2 to 1a2,xy to 1xy,etc. so what,s 8a+a=
Click here to see answer by stanbon(26259)

Question 50721This question is from textbook Glencoe Algebra 1
: what is 49 in creased by twice a number when it is written in an algebraic expression?This question is from textbook Glencoe Algebra 1

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Question 50786: What is four less than the product of 6 and a number is eight
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Question 50825This question is from textbook Saxon Algebra 1

: I think I'm just confused by the terminology. Saxon asks to solve the following by "elimination" to solve equivalent fractions, but with only positive numbers on the variable side, I can't get the problem to work out as in their examples - each of which has at least one negative number.
a. 4y + 3x = -7 and 3y + 2x = -6
They say to multiply each equation by one of the variable terms from the other...i.e. multiply first one by 2x and the other by 3x....doesn't work out. ?????? I end up with a plus 6x in both rather than a +6x and a -6x which would cancel out each other, leaving room to solve for y.
I'm missing something......:-(
RebeccaThis question is from textbook Saxon Algebra 1

Click here to see answer by stanbon(26259)

Question 50835: Solve for y in the following equations:
1. 25x-5y=15
y=_______

2. 18x+6y=(-12)y
y=_______

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Question 50877: factor completely: 2x^2-12x+18
factor completely: 2x^2-9
factor completely: 2x^3+6x^2-x-3

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Question 50892This question is from textbook Algebra and Trigonometry Structure and Method.

: A jar contains 40 coins consisting of dimes and quarters and having a total value of $4.90. How many of each kind of coin are there?This question is from textbook Algebra and Trigonometry Structure and Method.

Click here to see answer by Nate(3495)

Question 50900: There are two containers that contain bacteria cells. The bacteria will double its numbers every 20 minutes. One container has 100 cells and the other contains 250 cells. Write an expression that shows the above information.
Click here to see answer by stanbon(26259)

Question 49854This question is from textbook

: on the last message i meant this: evaluate the expression:
[(7-4)^2+3]+15This question is from textbook

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Question 50876This question is from textbook
: three times the quantity of 2 plus aThis question is from textbook

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Question 50929: simplify (X + 2p)^3 - (X - 2p)^3
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Question 50929: simplify (X + 2p)^3 - (X - 2p)^3
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Question 50970This question is from textbook Algebra I
: Please write the varible sentance(s) as an equation or an inequality.
1.a number "T" is increased by the sum of seven and the square of another number is ten.
This question is from textbook Algebra I

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Question 50977: Im trying to combine like terms
(2x squared -x+3) + (x squared +3x+4)
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Question 50983: A pool measures 20 feet by 30 feet. It is surrounded by a walkway which is same width around the rectangular pool. With the walkway, the area is 1500 square feet. What is the width of the walkway?
(a teacher generated question, not from textbook.)
Click here to see answer by checkley71(8405)

Question 50620: Evalute the algebraic expression 5ac/2(c-a) if a = 6 and c = 8?
Click here to see answer by junior403(76)

Question 51045: can you please help me solve for the variable in the following m+2=m-1 and 3n+5=2n-2 and give me a brief explaination on how u solve them.
Click here to see answer by checkley71(8405)

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