Mathematics - 6 September 2007

im 12 and i dont understand it it would be like

1200 divided by 2.5

how would i do that

2007-09-06 08:23:18 · 4 answers · asked by Anonymous

Two sisters who live 500 miles apart decide to meet at the halfway point for a visit. Joanne leaves at 11 and travels 50 mph. At noon, Sue leaves travels at 60 mph. Who will reach the halfway point first, and how much longer will she have to wait for her sister?

I just need the basic set up equation. We have to make up our own equation and solve it. I'm not sure though on how to set it up.

2007-09-06 08:13:34 · 7 answers · asked by Angel*Eyesz 3

2007-09-06 08:03:23 · 6 answers · asked by Anonymous

2007-09-06 07:59:44 · 4 answers · asked by Mike B 2

I've tried looking through my old study noted but I can't figure it out.I've gotten to this step: 3sinx-2cosx=0

2007-09-06 07:54:18 · 3 answers · asked by Anonymous

What is the estimate √60 rounded to the nearest tenth?

Please explain......

2007-09-06 07:53:52 · 4 answers · asked by BH 1

In a football game, the quarterback is 15 yards away from making a first down and is running at 264 yards per minute. After .03 of a minute, a linebacker who is 15 yards on the opposite side of the first down marker begins running directly towards the quarterback at 440 yards per minute. Will the linebacker be able to tackle the quarterback before he gets the first down? Show all work.

2007-09-06 07:38:09 · 3 answers · asked by Angel*Eyesz 3

An airliner with 235 passengers aboard crashes on the Kansas/Missouri state line. 5/9 of the bodies lands in Kansas & the rest in Missouri. How many of the survivors are buried in Missouri?

2007-09-06 07:35:53 · 5 answers · asked by Wile E. 7

Of all the numbers below, which of these should I eliminate to get a sum of $2,478,617.60. Is there an easy way to do this?

401,508.00
400,836.00
160,142.40
238,634.64
159,089.76
371,209.44
203,281.36
242,263.20
301,672.80
720,933.18
311,550.78
53,029.92

2007-09-06 07:31:39 · 4 answers · asked by Anonymous

Please find all real roots of these set of equations:

http://m1.freeshare.us/173fs730110.gif

2007-09-06 07:30:14 · 3 answers · asked by Amir 1

Ok i have to do a sheet for trig and dont know what to do wit this problem:

The height (Y) of maria's rocket can be represented by Y= -16x^2+70x+37 where x represents the time in sesconds since the rocket was launched, and the height is expressed in feet. What was teh maximum height of maria's rocket to the nearest tenth of a foot

2007-09-06 07:26:21 · 2 answers · asked by Allie B. 2

lets say i had a problem like ...

(3x+6)/(12x+1) = 5(2x+3)/ (x^2+6x+5)

how would i solve this, cross multiply ?

2007-09-06 07:22:37 · 4 answers · asked by dreamz 4

If a $300 typewrite loses 10% of its value each year, what is its value after 3 years?

2007-09-06 07:17:16 · 8 answers · asked by Anonymous

lets say u have a problem like...

(3x+6)/2 = 5(2x+3)/6

what is the first thing i would do to solve this?

i think i would distribute the 5 to the (2x+3) so 10x+15 it will be.
then i must multiply both sides by the denomenators?
do i need to find a common denominator or just multiply each side by the other denominator? then would multiplying by the denominators cancel the bottom then i need to multipy it by the numerators?im confused.

2007-09-06 07:10:53 · 9 answers · asked by dreamz 4

Decathlon Champion. For 1989 and 1990 Dave Johnson had the highest decathlon score in the world. When Johnson reached a speed of 32 ft/sec on the pole vault runway, his height above the ground t seconds after leaving the ground was given by h = -16t^2 + 32t. (The elasticity of the pole converts the horizontal speed into vertical speed.) Find the value of t for which his height was 12 ft.

2007-09-06 07:09:00 · 4 answers · asked by baby166_99 2

the distance between A and B is 100 km .
B is east of A.
2 vehicles start travelling at the same time,one from A and the other from B.
Both go east.
they meet after 10 hours.
the vehicle that started from B goes 4 km in (t+2 minutes) time when the vehicle started at A goes 4 km in t time.
what are the speeds of the 2 vehicles?


I got this:

4=(x+10)*(4/x+2/60)
the answer should be
4=(x+10)*(4/x-2/60)

this is the equation for B so why do I subtruct 2 minutes and not add them?

2007-09-06 07:06:56 · 3 answers · asked by Anonymous

2X^3-4X^2-30X




2X^4-6X^2-8

2007-09-06 07:05:13 · 7 answers · asked by gladdo19 1

If m1, m2 are slopes of two perpendicular lines, We know from cartesian geometry that their product m1.m2 = -1.
Even X and Y axes are perpendicular to each other.
why is it that the product of their slopes not equal to -1 ?

2007-09-06 07:02:41 · 7 answers · asked by sai kumar 1

2007-09-06 07:01:58 · 8 answers · asked by Anonymous

2007-09-06 06:58:49 · 6 answers · asked by rideinfree 1

For what value of the constant c is the function f continuous on (-infinant , infinant )?
f(x)={cx^2-3x if x < 1
___{x^3-cx if x >=1

I dont really understand how to do this can someone please explain it to me.

2007-09-06 06:57:29 · 2 answers · asked by Smokey. 6

example= 9x^2=144

2007-09-06 06:49:25 · 10 answers · asked by Cassia M 1

the distance between A and B is 100 km .
B is east of A.
2 vehicles start travelling at the same time,one from A and the other from B.
Both go east.
they meet after 10 hours.
the vehicle that started from B goes 4 km in (t+2 minutes) time when the vehicle started at A goes 4 km in t time.
what are the speeds of the 2 vehicles?

I know the answer is 30,40 km/hour .
I need the way

2007-09-06 06:47:31 · 1 answers · asked by Anonymous

Do you know an analitical way to obtain the tan 22.5°. Without using a calc

2007-09-06 06:39:19 · 3 answers · asked by logivan_net 3

ind?

2007-09-06 06:30:45 · 1 answers · asked by Anonymous

2007-09-06 06:30:09 · 12 answers · asked by Redbone Diva 1

2007-09-06 06:29:50 · 7 answers · asked by Anonymous

stuck on this question

the line "l" with the equation 3x+y - 9 = 0 intersects the line "m" wth the equation 2x+3y-12=0 at the point A
a) Find, as exact fractions, the coordinates of the point A

the region r1 is bounded by l, m and the y axis
the region r 2 is bounded by l, m and the x axis

b) show that the ratio of the are of r2 is 25:18

thanks

2007-09-06 06:29:31 · 1 answers · asked by Anonymous

2007-09-06 06:25:23 · 7 answers · asked by flo8225 1

2007-09-06 06:15:01 · 21 answers · asked by lisa f 1