Tutors Answer Your Questions about Quadratic Equations (FREE)
Question 143674: I have been trying this equation and just can't seem to get it. I have been asked to solve and reduce to a quadratic form. My first answer was 8 sq root u +12=0. But I do not think that is correct. I am to use "u" as a substitute for some variable in the equation. I have chosen U to substitute for (t+4). If anyone can let me know if I am in the right direction or how to solve this,much appreciated.
(t+4)^2/3 + 7(t+4)^1/3 +12=0.
This is what i did. 3rd root (u^2) + 7 * 3rd root u +12 =0
3rd root (u squared) + 7 * 3rd root U + 12=0
(1+7) 3rd root U + 12 =0
8 3rd root u = -12, 3rd root u = -12/8 reduced to -3/2
Final answer -3/2+ 3rd root u or -3/2-3rd root u
I have no idea what I am doing here, so any help is appreciated. Thanks.
Click here to see answer by solver91311(16897)   |
Question 143686: Multiply. these are fractions.
4/5 X (-7/4)
I need help with -1 2/5, Is this even close? This is multipliying fractions I had to use the X instead of a . in the middle, because i cannot do that on here. Can someone help. Please.
Click here to see answer by rapaljer(4667)  |
Question 143691: 5> -2x +4 or 11<_ -5x +4
Choose the solution of the inequality.
A) (-1/2,oo)
b) (-oo, -7/5]
c) (-oo, -7/5] u (-1/2,oo)
All parenthisis above are all the bigger ones that i do not have on this computer. The are more longated than the regular parenthisis.
D) (-oo,oo)
The above parenthisis is the only normal paranthesis. The oo looks like a 'sideways or laying down 8.
Can someone please oh please help me with this problem I do not unstand this at all, no matter how many time i have read the chapter, i still dont get it..
Click here to see answer by jim_thompson5910(28598) |
Question 143876: The perimeter of a rectangle is 178 inches. The length exceeds the width by 15 inches. Find the width and the legnth.
The length is ? inches?
The width is ? inches?
Write in an integer or a decimal.
Will someone please help me with this one. I thought last week would be all the questions I would have but NO I still have questions that I plainly do not understand. Help please.
Click here to see answer by ankor@dixie-net.com(15660)  |
Question 143883: Solve the system of equations by graphing. Then classify the system consistent or nonconsistnt, and the equations dependent or independent.
3x - 9y = 54
2x - 6y = -2
Will aomeone help me please?? Thank you.
Click here to see answer by Earlsdon(6287) |
Question 143773: This problem is one of my biggest problems that I do not no how to figure out will Someone please help me??
In 1991 the life expentancy of males in a certain country was 68.5 years. In 1996, it was 71.1. Let E represent the lif expectancy in year t and let t represent the number of years since 1991.
The linear function E(t) that fits the data is
E(t) = ?t + ?
(round to the nearest tenth)
Use the function to find the life expectancy of males in 2009?
E(18)=?
(round to the nearest tenth)
This is so confusing I do no no where to begin with this really can someone help? Please?
Click here to see answer by stanbon(57387) |
Question 143897: Solve and graph.
-12<_2x+2 and 2x +2 < 4 (The _ is supposed to be under the <)
Will someone please help me with this one?? I only have a couple questions today if someone could please help me I really need the help. Thanks
Click here to see answer by stanbon(57387) |
Question 143886: Hello all Yes I am back in an algebra class and I need some serious help again. I would so much appreciate your help in helping me pass this class!! I am not good at all in algebra, but am doing the ones that I can and will some help with the ones I need help with. I want to thank you all in advance for your help. Thanks!!
Solve.
4y + 5y <_ -81
The solution is {yly ? ?}
Click here to see answer by stanbon(57387) |
Question 143952: A designer, attempting to arrange the characters of his artwork in the form of a square grid with equal number of rows and columns, found that 24 characters were left out. When he tried to add one more row and column, he found that he was short of 25 characters. Can you find the number of characters used by the designer?
Click here to see answer by stanbon(57387) |
Question 143952: A designer, attempting to arrange the characters of his artwork in the form of a square grid with equal number of rows and columns, found that 24 characters were left out. When he tried to add one more row and column, he found that he was short of 25 characters. Can you find the number of characters used by the designer?
Click here to see answer by vleith(2825) |
Question 143894: In 1991, the life expectancy of males in a certain country was 68.5 years. In 1996 it was 71.1 years. Let E represent life expectancy in year t and let t represent the number of years since 1991.
The linear function E(t) that fits the data is
E(t)=?t + ?
Use the function to predict the life expectancy of males in 2009?
E(18)=?
Can someone help me with this one I do not understand. I dont understand the year t and let t represent the number of years. Doesnt t already represent a certain year, then it says it is the number of years since 1991? HELP!!!
Click here to see answer by oscargut(891)  |
Question 144050: Miguel's insurance company will replace his car if repair cost 80% of the cars value. The recently sustained $8000 worth of damage, but it was not replaced. What was the value of the car?
I might have a few more questions tomorrow, but i think I can do the next couple by myself...maybe. Thanks for all your help
Click here to see answer by stanbon(57387) |
Question 142655: In 1991 the life expentancy of males were in a certain country was 68.5 years.
In 1996 it was 71.1 years. Let E represent the lif expenctancy in year t, and let t represent the number of years since 1991.
The linear function E(t)that fits the data is
E(t)=?t + ??
Use the function to predict the life expendancy of males in 2009.
E(18)=
Can someone please help me with this I have no idea where to even start. I dont understand these at all, will someone explain to me or at least try to help me??
Click here to see answer by marcsam823(57) |
Question 144121: A square piece of cardboard is to be formed into a pizza box. The box is formed by cutting 2-inch square corners from the cardboard and folding them up. If the volume of the box is 512 in^3, what are the dimensions of the cardboard?
Click here to see answer by solver91311(16897) |
Question 144139: Solve then graph.
x + 6 < -3 or x + 6 > 1
The solution is {xlx ?}
Do -9 and -5 go in the question mark places above in that order? -9 in the first box and -5 in the second?(I cant make boxes either so I used question marks) And would the graph Have a ] or AN ) at the -9 spot with the arrow going to the left towards the higher -numbers? And a [ or an ( at the -5 spot? I hope i am making sense to you all. Can someone please help?
Click here to see answer by stanbon(57387) |
Question 144139: Solve then graph.
x + 6 < -3 or x + 6 > 1
The solution is {xlx ?}
Do -9 and -5 go in the question mark places above in that order? -9 in the first box and -5 in the second?(I cant make boxes either so I used question marks) And would the graph Have a ] or AN ) at the -9 spot with the arrow going to the left towards the higher -numbers? And a [ or an ( at the -5 spot? I hope i am making sense to you all. Can someone please help?
Click here to see answer by jim_thompson5910(28598) |
Question 144142: OOPPPSS! I no i said the last one was my last one but I cam across another one that I do not understand how to do correctly. Can you please help it is a word problem?
A cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-400) + 44.95 where it is assumed that t>_400 minutes. What times will keep cost between $91.20 and $114.70.
HELP PLEASE!!!
Click here to see answer by jim_thompson5910(28598) |
Question 144135: This is another word problem that I just do NOT have Any idea how to do, will someone please help me with this?
5. When managing a business, it is important to take inventory of where your money is spent. You have a monthly budget of $5,000. Refer to the table below and answer the questions that follow. Round your answers to the nearest tenth of a percent.
Category Cost Percentage
Labor $1,835 ???
Materials ??? 18%
Rent/utilities ??? 25%
Miscellaneous $1,015 ???
Total $5,000 100%
a) What percentage of the total monthly budget is spent on labor?
b) What percentage of the total monthly budget is spent on miscellaneous items?
c) How much do materials cost monthly?
d) How much do rent and utilities cost monthly?
HELP PLEASE!!!
Click here to see answer by solver91311(16897) |
Question 144135: This is another word problem that I just do NOT have Any idea how to do, will someone please help me with this?
5. When managing a business, it is important to take inventory of where your money is spent. You have a monthly budget of $5,000. Refer to the table below and answer the questions that follow. Round your answers to the nearest tenth of a percent.
Category Cost Percentage
Labor $1,835 ???
Materials ??? 18%
Rent/utilities ??? 25%
Miscellaneous $1,015 ???
Total $5,000 100%
a) What percentage of the total monthly budget is spent on labor?
b) What percentage of the total monthly budget is spent on miscellaneous items?
c) How much do materials cost monthly?
d) How much do rent and utilities cost monthly?
HELP PLEASE!!!
Click here to see answer by checkley77(12569) |
Question 144047: Snookers Lumber can convert logs into either lumber or plywood. In a given day, the mill turns out twice as many units of plywood as it does lumber. It makes a profit of $25 on a unit of lumber $40 on a unit of plywood. How many of each unit must be sold in order to make a profit of $10710?
Snookers must produce and sell ? units of Lumber and ? units of Plywood to make a profit of $10710?
I cannot do most word puzzles, I did three earlier and now need some help with this one and I think another one too, can you help please?
Click here to see answer by ankor@dixie-net.com(15660) |
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