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#26 Help Me ! » Wor problem using the h=-16t^2 +vt + s » 2006-03-07 22:46:17
- 4littlepiggiesmom
- Replies: 1
Fire works are shot upward with an intial velocity of 125 feet per second from a platform 3 feet from ground. how lonh does the rock take to hit the ground?
I've gotten
16t^2= 125 + s and get 31.25 seconds?? am I close???
#27 Help Me ! » one more problem 2 actully 2 » 2006-03-07 22:24:59
- 4littlepiggiesmom
- Replies: 4
for
2x^2 +10x -5 =0 and I get -0.56 and 4.44 my son get the same???
and the other one -6x^2 - x -1/3= 0 and I get 1 or .5 my son has -.91 or .24??/
thanks for any help
#28 Re: Help Me ! » using the quadriatic formula to solve! » 2006-03-07 22:21:04
Thanks I'm using that formula but correcting my sons homework and getting tired!
#29 Help Me ! » using the quadriatic formula to solve! » 2006-03-07 22:01:42
- 4littlepiggiesmom
- Replies: 12
I have been working on this for a while and nothing I comes up with works if I try to put in to make sure it's right?
2x^2-x-2=0
I put them in the formula that looking like;
1 + or - the square root of 1+16 all over 4?
I've gottem 1.5, -1 4, 3.5 and some others.
What am I doing wrong???
#30 Help Me ! » Quadratic Function Word Problem???? Yikes! » 2006-02-27 20:54:18
- 4littlepiggiesmom
- Replies: 2
A manufacturer has daily production costs of
C = 10,000- 10 x + o.0450(x Squared)
Where C is the total cost in dollars and X is the hunber of units produced. How many units should be produced each day to yield a minimum cost?
I got c= 9999.995 which would round to 10, 000 units? Any where close?
#31 Re: Help Me ! » Did I simplify these sqareroot problems right??? I sure hope so! » 2006-02-21 17:26:36
No my 8 should be * for the multiplication sign??? It's been a long night of checking over homework with lots of english to go??? Sorry
1 should be the square root of 7 times(*) the square rot of 18 over the square root of 2?
2. the square root of 10 times(*) the square root of 16 all over(divided by) the square root of 5
Sorry for the mix up
#32 Help Me ! » Did I simplify these sqareroot problems right??? I sure hope so! » 2006-02-21 16:38:56
- 4littlepiggiesmom
- Replies: 4
1. sqrt 7 8 sqrt 18/sqrt 2= I got 3sqrt 7
2. sqrt 10 8 sqrt16/sqrt5 = I got 4sqrt2
And the last one38sqrt 8/64= I got 3sqrt3/4
#33 Help Me ! » simplifing with not negatives??? Yikes....I'm lost » 2006-02-16 00:58:37
- 4littlepiggiesmom
- Replies: 1
mn^-9m^30/m^0m^23
I get m^8/n^9???? am I close?:/
#34 Re: Help Me ! » simplifing expressions with no negatives?? mom need help please!! » 2006-02-15 19:35:38
not enought to count on but 8 sheet f paper later /I have come up with 1/x^5y^13 is that getting closer?
#35 Help Me ! » simplifing expressions with no negatives?? mom need help please!! » 2006-02-15 18:25:16
- 4littlepiggiesmom
- Replies: 3
y(x^-3/y^-5)^-1 * x(y^3/x^-3)^-3
I'm really lost but have gotten two answers?? 1 isx^6
the other is x^12/y^12
I doubt either are right but I don't knowe what to do about the first letter because I alwasy end up with (an example not the actual factors) x/y^-2/x^1 and don't know what to do next????
#36 Help Me ! » Help with rewriting an expression with positive exponents Please help » 2006-02-15 17:41:39
- 4littlepiggiesmom
- Replies: 1
(a^-9b^-9)(a^3b^-8)
I* get
a^3/ a^9b^17 which I simpliified to 1/a^6b^17 am I close??
1 more 1/(8xy^-6)^-1 where I get
8xy^6???
Checking my freshman sons homework and he gets something total different......help please:/
#37 Puzzles and Games » Suudocu or such math cube??? » 2006-02-14 15:12:28
- 4littlepiggiesmom
- Replies: 4
9 by 9 square using all the numbers 1-9 on each line up and down? Helppppppppp
#38 Help Me ! » Mom Needs Help!! » 2006-01-14 18:47:55
- 4littlepiggiesmom
- Replies: 2
A factory has fixed costs of 2,900 dollars, and each unit of their product costs 45 dollars to make. Using the letter 'x' for the number of units produced, find an expression for the average cost per unit if x units are produced.
What I think so far is that
45x(2900-x)...is that somewhat correct?
#39 Re: Help Me ! » Linear Programming (maximization) » 2006-01-09 11:52:49
Not sure if all this is right but I get after they've made their 6 tons of green that
they have 16 tons of blue left and 14 tons of yellow!
So when they sell they will sell 4 tons of blue + 4 tons of Yellow + 2 tons of green! for $1000
This leaves them 12 tons of blue + 10 tons of yellow and 4 tons of green; so if they could they could sell adnother of the 10 ton set and end up with 4 blue and 2 yellow letft...
Hope this is what you need and if not sorry! 
H