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

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Algebra: Evaluation of expressions, parentheses

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Question 70355: Evaluate the function for the value specified.
f(x)= x² - 7x + 10; find (a)f(0),(b)f(5),and(c)f(-2).
Click here to see answer by funmath(2873)

Question 70563This question is from textbook
: Hello, will you please help me with this type of epression for my son in 6th grade. I need refresher course...Thanks!
The question is...Evaluate each epression for the given values of the variables. 3a + 5, for a = 5
This question is from textbook

Click here to see answer by stanbon(26296)

Question 70638: HELP!!!! I KEEP GETTING TWO DIFFERENT ANSWERS.

Evaluate: Evaluate. (15 – 5) ÷ [(12 ÷ 2 · 2) – 2] show every step taken.

Click here to see answer by bucky(1732)

Question 70680This question is from textbook

: 8x-3(x-1)=4(x+2)This question is from textbook

Click here to see answer by checkley75(3666)

Question 70689: 2x+4(x-5)=6
Click here to see answer by checkley75(3666)

Question 71285: I need help on how to figure out problems like these:
-4=x-4
x-7=5( o already know this one but i need the steps and im not sure how to do it)
-2x+1=-5
Click here to see answer by funmath(2873)

Question 71299: (-3)-(-2+4)+(-5)
Click here to see answer by funmath(2873)

Question 71299: (-3)-(-2+4)+(-5)
Click here to see answer by checkley75(3666)

Question 71350: I have been stuck on solving this equation
8x-11x+13x=40-16x+6x
Click here to see answer by checkley75(3666)

Question 71354: I'm supposed to simplify each side of equation then solve it. i can't seem to get a answer that works
-5-4+14=7y-12-6y+1
Click here to see answer by checkley75(3666)

Question 72564This question is from textbook pre-algebra,

: can u help me with all these problems?i dont get it.This question is from textbook pre-algebra,

Click here to see answer by elima(1433)

Question 73020: Evaluate b²2bc + c² if b = 3 and c = -2.

Click here to see answer by jim_thompson5910(13794)

Question 73019: SOLVE FOR X
(4-2)(X-2)=4X-8
Click here to see answer by jim_thompson5910(13794)

Question 73018: (4-2)(x-2)=4x-8
Click here to see answer by rmromero(383)

Question 72906: Perform the indicated operations

(-1/5)3 + {(-1/3)2 + 1/12(1/6 - (-1/4)3)}
Click here to see answer by ptaylor(1578)

Question 73026: a trader bought some oranges at 75 cents each. she finds that six of them are rotten, she sells the rest at one dollar each and makes a profit of thirty-one dollar fifty cents how many oranges did he buy. (work in cents)
Click here to see answer by stanbon(26296)

Question 73186: Could I please get some help with problem solving an inequality expressing.
Question: A electronic store wants to order at least 3 times as many DVD players as VHS players. Write an inequality expressing this relationship.
x+ 3x is this correct?
Click here to see answer by stanbon(26296)

Question 73403: Write an algebraic expression for 4 more than 1/3.
Click here to see answer by bucky(1732)

Question 73734: Given
x3-64 = ( x+a ) ( x2+bx+c )

what are the values of a, b and c. Enter your answer as a list [in brackets], in the form: [a, b, c]

Click here to see answer by jim_thompson5910(13794)

Question 73733: Factor the following
x2-x-30

Click here to see answer by jim_thompson5910(13794)

Question 73731: Simplify as much as possible
4n-1 41-n

Click here to see answer by SHORTY4848(3)

Question 73735: Given the polynomial below:
-34 x7-50 x5+98 x4-13 x3+49 x2-18 x-89

what are its degree a, the coefficient b of x4, and the value c of its constant term (if there is no constant term, answer 0)?

Click here to see answer by jim_thompson5910(13794)

Question 73732: Evaluate

Ö

--------------------------------------------------------------------------------
(-5)2 - 3 + 14

--------------------------------------------------------------------------------
|19 - 6 + 3 - 25|

Click here to see answer by checkley75(3666)

Question 73817: Find the expression that respresents its perimeter. A triangle has sides 3x + 7, 4x-9, and 5x+6
Click here to see answer by funmath(2873)

Question 73927This question is from textbook Algebra

: how is this solved
4(2x-1)=16 thnksThis question is from textbook Algebra

Click here to see answer by checkley75(3666)

Question 73736: Find all solutions of the following equation

Click here to see answer by psbhowmick(456)

Question 74286: I need help evaluating the expression
x^2/y+x^2/z for x=10,y=-5, and z=-2
Click here to see answer by funmath(2873)

Question 74435: 5(2x-1) - 3(x-4) = 4(x+4)
I got the most of it. sec 3(x-4)should it be
3(x+4). I seen something about - changing to positive or the other way around.
In an example.
2(3x-1)-3(x+5)=4
after doing the dist prop.
6x-2 - 3x (+ or -15) the book put a -. When should I change my signs. And why.
Click here to see answer by Earlsdon(4900)

Question 74688: How do you know when you can tell greater or least than as a decimal and fraction.
Click here to see answer by stanbon(26296)

Question 74698: i am having problems solving equations for example solving for x in an equation.
Click here to see answer by checkley75(3666)

Question 76370: Find 3 consective even intergers such that the sum of twice the first and three times the second minus the third equals -38.
Click here to see answer by ankor@dixie-net.com(6693)

Question 76372: A soft ball team won 24 games, which was 60% of the games played. How many games did the team play?
Click here to see answer by rmromero(383)

Question 76371: Find two consecutive intergers such that twice the first interger plus the second interger equals 46.
Click here to see answer by checkley75(3666)

Question 76371: Find two consecutive intergers such that twice the first interger plus the second interger equals 46.
Click here to see answer by rmromero(383)

Question 76369: 2/7 of a number minus four is ten. Find the numbner
Click here to see answer by checkley75(3666)

Question 76839: t-3
_______ 3 and 6 are exponents need to simplify and make positive
t-6
Click here to see answer by funmath(2873)

Question 76837: 3 2
12x -8x +4x
the 3 goes over the 12, the 2 over the 8
Click here to see answer by checkley75(3666)

Question 77013: (8a^5-6a^3)+(5a^5+9a^3)
Click here to see answer by jim_thompson5910(13794)

Question 77307: The numerator of a fraction is 5 times the denominator. If 4 is subtracted from the numerator, and added to the denominator, the resulting fraction is equal to 21/9. Find the original fraction
Click here to see answer by checkley75(3666)

Question 77314: 6/z^2-4/z
Click here to see answer by stanbon(26296)

Question 77309This question is from textbook introductory to algebra

: At a given hour, two cars leave a city in the same direction. One travels at 60 mph, and the other travels at 75 mph. In how many hours will the cars be 90 miles apart?This question is from textbook introductory to algebra

Click here to see answer by checkley75(3666)

Question 77309This question is from textbook introductory to algebra

Click here to see answer by stanbon(26296)

Question 77346This question is from textbook beginning algebra
: how do you start solving the expression 3y+6 / 4y+8
20 8 do you find the LCD first or do you invert the second fraction first, and at what time do you start cross canceling?This question is from textbook beginning algebra

Click here to see answer by jim_thompson5910(13794)

Question 77228: What do I do? Please help me?
Multiply, using the vertical method.
(m^2 – 5mn + 3n^2)(m^2 + 4mn -2n^2)

Click here to see answer by checkley75(3666)

Question 77227: Simplify each of the following expressions. Write your answers with positive exponents only.
(x^2)^-3(x^-2) / (x^2)^-4

Click here to see answer by bucky(1732)

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