Mathematics - 21 October 2007

Given are the following answers pick the correct one
A)y=-5x*2 B)y=5 C)y=x D)y=5x

2007-10-21 06:26:46 · 3 answers · asked by Anonymous

When dealing with linear relationships, what are the advantages of using a standard form for an equation. We are studying point-slope, standard form, and explicit and recursive. We are expected to be able to convert each of them. I'm just unsure of the advantages for using each one.

2007-10-21 06:24:14 · 2 answers · asked by Anonymous

1.Match the expression with the word phrase:
4 times a number.

4 + n

n ÷ 4

4 – n

4n
2. Match the expression with the word phrase:
The budget is divided into 5 parts.

b + 5

b ÷ 5

b – 5

5b

3. Evaluate the Algebraic Expression, 12 ÷ x when x = 3

4

9

15

36

2007-10-21 06:21:50 · 11 answers · asked by Anonymous

The answer is three of course, but I don't know whether to say 3 units squared, or 3 square units, or just 3, or something else... It would be much easier if it were in cm, (then it would be cm squared), but it doesn't give you a specific unit...?

2007-10-21 06:19:15 · 9 answers · asked by Parking Lot 1

2007-10-21 06:17:55 · 17 answers · asked by ? 3

2007-10-21 06:17:50 · 2 answers · asked by medhini_igoor 1

Check whether the ordered pair (5,6) is a solution of the system.

-2x+4y=-14
3x+y=21



Please explain in easy steps.
Thank you for your time!

2007-10-21 06:15:31 · 6 answers · asked by Jessie 1

1. Evaluate the Algebraic Expression, 9 + 6x ÷ 3 when x = 5

13

19

25

33
2. Evaluate the Algebraic Expression, (7 – x) + 2x2 when x = 3

16

22

36

54
3. Evaluate the Algebraic Expression, 6ab + 2 when a = 2 and b = 3

13

18

32

38

2007-10-21 06:15:26 · 7 answers · asked by Anonymous

Find the critical numbers of the function.
(p-2) divided by ((p^2)+3)

2007-10-21 06:14:47 · 4 answers · asked by Anonymous

Given answers pick the correct answer
A)16 B)0 C)-3 D)4

2007-10-21 06:10:53 · 3 answers · asked by yanksrule4691 1

you would use the vertex form equation right?

2007-10-21 06:08:04 · 4 answers · asked by Anonymous

2007-10-21 06:04:34 · 14 answers · asked by la_troublez_26 1

i am having trouble understanding this question
the area of a circle is pie r^2
how would you right it if it had to be written in regards to the squares side??

2007-10-21 06:04:04 · 6 answers · asked by Anonymous

answers given pick correct answer=
A)4a*2+6ab+9b*2 B)4a*2+12a*2b*2+9b*2 C)4a*2+9b*2
D)4a*2+12ab+9b*2

2007-10-21 06:02:40 · 3 answers · asked by yanksrule4691 1

You have a friend who needs to know how to use the slope and y-intercept a) to write an equation and b) to draw a graph.

Give the detailed steps so that your friend can accurately write the equation as well as draw the graph from your description.
Thank you

2007-10-21 05:56:07 · 3 answers · asked by smiley 1

In 1999, there were 9000 students by the year 2001 there was an increase to 14000 students; therefore, 5000 students enrolled.

What is the correct formula to use and how do I show it?

14000-9000=5000 students enrolled

2007-10-21 05:52:27 · 1 answers · asked by smiley 1

Can someone please explain this in detail so I can understand how to do this myself in the future?

Thank you in advance

2007-10-21 05:46:15 · 8 answers · asked by smiley 1

Here is a mixture problem ?

http://i218.photobucket.com/albums/cc298/curseofgoldendragon/mixture.png

whats the key concept here ?

see, this problem is a merging of mixture and loss/profit chapter.

hence i am getting confused

whats the key concept here ? please explain
what should be kept in mind ?
where do i start ?

2007-10-21 05:42:56 · 1 answers · asked by Anonymous

I am given a 2-by-2 matrix A (0,8 / 5,7) which I am asked to write as a product of elementary matrices and then write the inverse of A as aproduct of elementary matrices. So I turned A into reduced row echlon form using the following steps:

-Switch R1 and R2
-1/5 * R1
-1/8 * R2
- (-7/5) * R2 + R1 into R1

So the elementary matrices are:
(0,1 / 1,0) * (1/5,0 / 0,1) * (1,0 / 1/8,0) and (1,-7/5 / 0,-7/5)

Right?

Then the inverse of A as a product of elementary matrices is just the inverse of each of (1,-7/5 / 0,-7/5) * (1,0 / 1/8,0) * (1/5,0 / 0,1) and (0,1 / 1,0).

Does this make sense? Because I keep getting the wrong answer and I don't know where I've gone wrong....

2007-10-21 05:30:41 · 2 answers · asked by Bikki 3

The verbal problem is "7 times a number is the same as 12 more than 3 times the number. Find the number."

I know that the equation is
7x=3y+12
but how do you solve it?

Could you show me in steps please? Thanks!

2007-10-21 05:27:50 · 8 answers · asked by <3 2

determine wether the graph of each parabola opens upward or downward. Dose any one have a clue
y=-1/2 x^2+3

2007-10-21 05:06:55 · 4 answers · asked by sumguy 1

can a piece-wise function posess extrema on an interval?

2007-10-21 05:04:23 · 3 answers · asked by Anonymous

If the solution to an equation is imaginary or irrational, it takes a bit more effort to check. Replace x by each given number to verify each statement.

Both 2 + 3i and 2 - 3i satisfy x^2-4x+13=0

2007-10-21 05:00:36 · 2 answers · asked by Anonymous

2/7=n-5/n+8

please show work in ur answer.

:)

2007-10-21 05:00:22 · 5 answers · asked by hello 3

Okay, so I asked this same question a couple days ago and no one has responded with anything that has helped me.
Anyone else have any ideas?

2007-10-21 04:49:12 · 3 answers · asked by MJ 1

2007-10-21 04:30:08 · 5 answers · asked by Anonymous

2007-10-21 04:22:42 · 5 answers · asked by D 2

I can't dp this for the life of me
please help
b^2+13b^2+36=0

2007-10-21 04:15:50 · 4 answers · asked by sumguy 1

x^2+x+√(x^2 +x)-2=0
I have no clue any help please

2007-10-21 04:12:01 · 1 answers · asked by mormar 1

2007-10-21 03:57:19 · 8 answers · asked by Anonymous