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

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Question 435421: Simplify. Please show all of your work.
30/20

Click here to see answer by ilovetazie101(1) About Me 

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(24785) About Me 

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 ?

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Question 437147: factor x^2-8x+15
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Question 437459: 2(x-5)=-11
Would x be negative 3?

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Question 437588: Write the equation and solve:
three times a number subtracted from eight is 35

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Question 437588: Write the equation and solve:
three times a number subtracted from eight is 35

Click here to see answer by rfer(16322) About Me 

Question 437884: I need to evaluate -x when x=-8.
Click here to see answer by stanbon(75887) About Me 

Question 438777: The sum of the page numbers on the facing pages of a book is 281. What are the page numbers?
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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)

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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(75887) About Me 

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(75887) About Me 

Question 441779: Evaluate 19 - 5 ÷ (1/3 + 1/2)
Click here to see answer by robertb(5830) About Me 

Question 442179: using multiplication principle solve -12 > -4k
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Question 442531: How do you simplify the expression (-24x squared) divided by (6x) ?
Click here to see answer by stanbon(75887) About Me 

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

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Question 443201: simplify (4x^4-9y^4)/(4x^4+12x^2y^2+9y^4)
Click here to see answer by swincher4391(1107) About Me 

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(19441) About Me 

Question 443284: Write an algebraic expression that represents the number of decades in y years.
Click here to see answer by swincher4391(1107) About Me 

Question 444049: Please help me solve: evaluate Please+help+me+solve%3A+evaluate+sqrt -(-72). Thanks
Click here to see answer by edjones(8007) About Me 

Question 444492: (-2)(4)+ 5 [6-(-2)]/-2[9+(-5)]=
Click here to see answer by rfer(16322) About Me 

Question 444754: *Evaluate*(:
(-4) to -2 power

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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(69443) About Me 

Question 445033: Please help me solve this equation: 5x2-3(x2-3x)+5x+7
Click here to see answer by checkley79(3341) About Me 

Question 445529: 2y/x+((2x-y)/y)
Click here to see answer by stanbon(75887) About Me 

Question 445911: Given that 8^x-1/3^2x = 2^3x+1/54^x , evaluate 6^x .
Click here to see answer by Gogonati(855) About Me 

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(16322) About Me 

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)

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Question 446288: how do i simplify this
(((-2[37-(-46-68)]

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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) About Me 

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) About Me 

Question 446786: Please help me with this equation? (4x+4)(7x-3)
Click here to see answer by richard1234(7193) About Me 

Question 448037: 2h/h
Click here to see answer by jim_thompson5910(35256) About Me 

Question 448317: How do you solve this?
– 4 – (-9) – 5

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Question 448317: How do you solve this?
– 4 – (-9) – 5

Click here to see answer by solver91311(24713) About Me 

Question 448356: 12-2x3+1
Click here to see answer by jim_thompson5910(35256) About Me 

Question 448169: n divived by 32. try to n alone
n + 17
n - 29
6 x n

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Question 448414: How to simplify this...
3x^2 - 5x + 2 - 3x^2 + 4x

Click here to see answer by edjones(8007) About Me 

Question 448944: In 2007, Europe and the United States together had installed wind turbines capable of producing about 60 thousand megawatts of electricity. Europe’s wind-turbine capacity was four times that of the United States. What was Europe’s wind-turbine capacity in 2007?
Click here to see answer by jorel1380(3719) About Me 

Question 449636: Evaluate and explain the following expression.
(xy)3 if x=4 and y=6

Click here to see answer by jim_thompson5910(35256) About Me 

Question 449694: How do I evaluate 6+(-10)+(-4)+3?
Click here to see answer by TheDoctor(14) About Me 

Question 449696: How do I evaluate 6+(-10)+(-4)+3?
How do I evaluate -5+2+(-7)+0?

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Question 450269: Volume of cone: Base is 20ft H is 10ft
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Question 450327: #1. Do you know how to solve 4r + 5r = 45
#2. Do you know how to solve 2a + 9a =88
#3. Do you know how to solve r dicided by 3 - r divided by 5 = 4 divided by 15
#4. Do you know how to solve 7c divied by 10 - c divided by 5 = 9 divied by 2

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Question 450717: 4sqrt(75)
Click here to see answer by jim_thompson5910(35256) About Me 

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840