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

Tutors Answer Your Questions about expressions (FREE)

Question 433604: solve
0.4x+5 < or equal to 0.8x-2
solution si {x/x _ _ }
Click here to see answer by stanbon(57967)

Question 433977: How do you solve -4(6+3x)=-46.
Click here to see answer by stanbon(57967)

Question 433387: Simplify each expression.
1.sqrt -81
2.(5-2i)(2+5i)
3.3+5i/2-4i
Click here to see answer by robertb(4012)

Question 434358: Factor each expression completely.
1. -3x^2+21x
2. x^2-16
3. x^2-10x+24
4. x^2-6x

Click here to see answer by MathLover1(6812)

Question 434440: 12;8t=96
Click here to see answer by stanbon(57967)

Question 434812: please tell me if I got this right

13+4b+6b-5
10b-8
Click here to see answer by stanbon(57967)

Question 434876: answer to 2c+9-2
Click here to see answer by stanbon(57967)

Question 435100: v=(b-u)/k solve for u
Click here to see answer by Gogonati(817)

Question 435535: factor completely: 5x+5y+zx+zy
Click here to see answer by shree840(260)

Question 435421: Simplify. Please show all of your work.
30/20
Click here to see answer by ilovetazie101(1)

Question 436216: lenna is a meteorologist. On December 10, she notes that the temperature is −3°F at 6:00 A.M. She predicts that the temperature will rise at a rate of 2° per hour for 3 hr, and then rise at a rate of 3° per hour for 6 hr. She also predicts that the temperature will then fall at a rate of 2° per hour for 3 hr, and then fall at a rate of 5° per hour for 2 hr. What is lenna’s temperature forecast for 8:00 P.M?

Click here to see answer by ewatrrr(10682)

Question 435841: Well I Dont Know If Thats The What Its Called^ Expressions Somethinq like That But This Is What My Homework Problems Look Like
1. (x+5)(x+2)=x^2+7x+10
Where Do I Even Begin ?
Click here to see answer by richard1234(5390)

Question 437147: factor x^2-8x+15
Click here to see answer by oberobic(2304)

Question 437459: 2(x-5)=-11
Would x be negative 3?
Click here to see answer by rwm(914)

Question 437588: Write the equation and solve:
three times a number subtracted from eight is 35
Click here to see answer by Klaus(2)

Question 437588: Write the equation and solve:
three times a number subtracted from eight is 35
Click here to see answer by rfer(12730)

Question 437884: I need to evaluate -x when x=-8.
Click here to see answer by stanbon(57967)

Question 438777: The sum of the page numbers on the facing pages of a book is 281. What are the page numbers?
Click here to see answer by stanbon(57967)

Question 439371: HELP!!
Can anyone help with the following type of problem??
Using the quotient rule, find the derivative of f(x) = (2x - 5) / (3x +1). (Do not simplify)

Click here to see answer by stanbon(57967)

Question 440619: The perimeter of a rectangular sign is not to exceed 50ft. The length is to be twice the width. What widths will meet these conditions? I think it starts like this: l=2w≤50
Click here to see answer by stanbon(57967)

Question 441695: 3Z+23=29 what do you suppose the answer is that is being asked for since "Z" is NOT in parentheses?
Click here to see answer by stanbon(57967)

Question 441779: Evaluate 19 - 5 ÷ (1/3 + 1/2)
Click here to see answer by robertb(4012)

Question 442179: using multiplication principle solve -12 > -4k
Click here to see answer by josmiceli(9817)

Question 442531: How do you simplify the expression (-24x squared) divided by (6x) ?
Click here to see answer by stanbon(57967)

Question 443155: what does x equal in the equation 5x - 7(2 - 4x)

Click here to see answer by stanbon(57967)

Question 443201: simplify (4x^4-9y^4)/(4x^4+12x^2y^2+9y^4)
Click here to see answer by swincher4391(726)

Question 443273: Waste disposal, A waste disposal tank buried in the ground holds 15 gallons less than four times what a tank mounted on a truck holds. choose a variable to represent the number of galloons that one type of tank holds then write an algebraic expression that represents the number of gallons the other tank holds.
Click here to see answer by josmiceli(9817)

Question 443284: Write an algebraic expression that represents the number of decades in y years.
Click here to see answer by swincher4391(726)

Question 444049: Please help me solve: evaluate sqrt -(-72). Thanks
Click here to see answer by edjones(7569)

Question 444492: (-2)(4)+ 5 [6-(-2)]/-2[9+(-5)]=
Click here to see answer by rfer(12730)

Question 444754: *Evaluate*(:
(-4) to -2 power
Click here to see answer by edjones(7569)

Question 445051: Can you please show me how to solve this?
Solve for m
s= 4m-3n/21
Click here to see answer by Alan3354(31519)

Question 445033: Please help me solve this equation: 5x2-3(x2-3x)+5x+7
Click here to see answer by checkley79(3056)

Question 445529: 2y/x+((2x-y)/y)
Click here to see answer by stanbon(57967)

Question 445911: Given that 8^x-1/3^2x = 2^3x+1/54^x , evaluate 6^x .
Click here to see answer by Gogonati(817)

Question 445980: i get confused when answering equations I'm not sure if i'm doing it correctly the question is multiply -17(-3r-4s+9) do i multiply each by -17?
Click here to see answer by rfer(12730)

Question 446070: QUESTION: Find the midpoint of the segment with the given endpoints. Then find the distance between the points. Write your answer in simplest form.
a) (4,2), (6,10)

b) (-3,5), (4,9)

Click here to see answer by Leaf W.(97)

Question 446288: how do i simplify this
(((-2[37-(-46-68)]
Click here to see answer by nerdybill(7003)

Question 446630: 4x^2(2y-5)-9(2y-5) please help me solvethis i got(2y-5) (4x^2-9) and i was told to keep going?
Click here to see answer by chriswen(106)

Question 446787: the sum of 2 numbers is 100; if the greater number is increased by 5, it is equal to twice the smaller. What are the numbers? Thanks. gotdogs@hotmail.com Send asap! 11:00 central time in us. Terri
Click here to see answer by sudhanshu_kmr(1152)

Question 446786: Please help me with this equation? (4x+4)(7x-3)
Click here to see answer by richard1234(5390)

Question 448037: 2h/h
Click here to see answer by jim_thompson5910(28715)

Question 448317: How do you solve this?
– 4 – (-9) – 5
Click here to see answer by jim_thompson5910(28715)

Question 448317: How do you solve this?
– 4 – (-9) – 5
Click here to see answer by solver91311(17077)

Question 448356: 12-2x3+1
Click here to see answer by jim_thompson5910(28715)

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