Mathematics - 3 December 2007

Y=2x²-3x-2
Y=x-4

Iv already done this using a graph but im getting mixed up rearranging the formular can anybody help?

2007-12-03 23:57:50 · 4 answers · asked by Anonymous

I solved it but the answer choices are totally different
here are the answer choices for them.
a.4y - 3 = 0
b.4x + 4y - 5 = 0
c. 2x-2y -1 = 0
d. 4x - 4y +1 = 0
e. 2x + 2y - 1 = 0

the answer i got was D, but I dont think it's right because I didnt change it into perpendicular. Please help me.

2007-12-03 23:46:51 · 4 answers · asked by Thanh 1

It took a boat 7 hours to travel 231 miles with the current but 11 hours to travel the same distance against that same current. Find the speed of the boat in the still water and the speed of the current.

2007-12-03 22:41:50 · 4 answers · asked by journey 1

If I work 7.25 hours, it's considered 7 hrs and 15 mins.
If I only worked 4.35 hours, what would the difference be ?

2007-12-03 22:27:21 · 4 answers · asked by Ly S 1

I need this as soon as posible.

2007-12-03 22:26:56 · 2 answers · asked by Azehc 1

square root of (7/3) multiply by square root of (7/3)

thank you!!^_^

2007-12-03 21:50:54 · 8 answers · asked by leSsien 1

I need help with this problem:graphical method

Find two numbers such that twice the smaller plus three times the larger is 34, and 5 times the smaller minus twice the larger is 9.

Find two numbers such that 5 times the larger plus three times the smaller is 47, and four times the larger minus the smaller is 20.

Thanks for your help! 10 points for best answer

2007-12-03 21:14:32 · 9 answers · asked by Asker A 1

2007-12-03 20:30:09 · 10 answers · asked by jennifer c 1

i'm having trouble... help?

2007-12-03 19:41:05 · 9 answers · asked by Hans Lambert 1

write an equation of the line that is parallel to the given line and passes through the given point.
1. y=2x+2 (3,2)

2.y=-2x+3 (4,4)

can you please help me...i know how to solve these problems but im not quite sure if i did it right...im just double checking!

2007-12-03 19:39:06 · 4 answers · asked by Anonymous

given g(x) = x^2(x+2) find g`(x+1), simplifying the answer.

2007-12-03 19:02:57 · 2 answers · asked by sushiis4me 2

okay I get that you take the anti derivative and get 1/5e^5x but then I hit a wall

2007-12-03 18:57:52 · 4 answers · asked by clawedstar 1

........ At the end of the 8 days it picked 60 hazelnuts. How many rainy days were there during the past 8 days?

2007-12-03 18:57:40 · 7 answers · asked by crazy_foz51 2

[4^n] + [8^n]
----------------
13^n

I thought it would be simply 12/13 but no.... apparently it is not

2007-12-03 18:49:34 · 3 answers · asked by Anonymous

2007-12-03 18:40:23 · 5 answers · asked by sepideh a 1

Any ideas on how I could solve this question

2007-12-03 18:30:27 · 7 answers · asked by stinger98837 1

2007-12-03 18:28:20 · 2 answers · asked by Trisha 2

Can someone help me with this?

I must find the solution to the differential equation:

dy/dx = sin(pie x) given the initial condition that y(2)=2.

2007-12-03 18:27:45 · 3 answers · asked by Ajax J 2

Let U=1n a and V=1n b. Write the following expression in terms of u and v without using the function 1n.

1n 4√a^5/b^3

2007-12-03 18:20:20 · 2 answers · asked by Anonymous

2(du/dt) = u^2 u( 0)= 1

Please give a step by step, I know that i am close to the right answer, i'm just missing a step thats throwing my answer off

2007-12-03 18:09:32 · 4 answers · asked by Anonymous

2(x + 6) = 3(2 - x) - 4

2007-12-03 18:06:31 · 22 answers · asked by stinger98837 1

2007-12-03 17:34:37 · 8 answers · asked by Anonymous

the choices are:
1. -1
2. 5
3. 4+ 3i
4. 2- 6i
5. 2+ 3i

2007-12-03 17:18:34 · 7 answers · asked by PrestigesGlow 1

For all problems let s=<-3,1>, u=<4,2>, v=<1,-2>, w=<-2,5>

(a) u * v

(b) (2w) * u

(c) v * (w - s)

2007-12-03 17:15:27 · 2 answers · asked by Anonymous

Changing fractions to decimals.... How is the answer 0.8 gotten from 4/5? This thing I am looking at says divide the numerator by denominator. So, 4 divided by 5 is 0.8 on the calculator. But where does the 8 come from? I need to know how to do it without a calculator. I need it explained in detail.

2007-12-03 17:07:36 · 16 answers · asked by Deb 2

2007-12-03 17:04:38 · 6 answers · asked by PrestigesGlow 1

1/e - 1/f = 1/g solve for f incase you cannot tell, these are in fraction form

2007-12-03 16:51:58 · 10 answers · asked by Anonymous

2007-12-03 16:51:42 · 3 answers · asked by Mane Z 1

what is 75,000,000

2007-12-03 16:47:19 · 4 answers · asked by Anonymous

Its a logarithmic equation and im having a little trouble.

2007-12-03 16:38:30 · 3 answers · asked by afromaster32 2