Science & Mathematics - 12 September 2007

solve for y

2007-09-12 13:28:58 · 30 answers · asked by Anonymous in Mathematics

2007-09-12 13:28:44 · 4 answers · asked by sheliafrnc 1 in Mathematics

what two consequative numbers equal 528...
thnx a lot
and please give me the answer straight out an di will give you 10 pts.

2007-09-12 13:27:03 · 7 answers · asked by Anonymous in Mathematics

Payment l Change
-------------l------------
$1 l $9
-------------l------------
$2 l $8
-------------l------------
$3 l $7
-------------l------------
What is the relationship between Payment and Change?
_____ P=C

2007-09-12 13:26:49 · 2 answers · asked by The Girl With Kaleidoscope Eyes 2 in Mathematics

Thanks in advance... I tried using the equation y=vt + 1/2at^2 but I think rearranging the equation is not something I'm doing right.

2007-09-12 13:26:32 · 1 answers · asked by bouncing_soul_geuse 2 in Physics

A football player attempts a 40-yd field goal. If he is able to impart a velocity U of 120 ft/sec to the ball, compute the minimum angle Theta for which the ball will clear the goal, which has a height of 10 feet. Let the mass of the ball be tan(theta). Yes, the mass of the ball depends on the angle.

2007-09-12 13:23:46 · 1 answers · asked by Charlie4590 2 in Physics

Find all the numbers with the property that when the number is added to itself the sum is the same as when the number is multiplied by itself.

What's the best way to go about solving this question?

2007-09-12 13:20:30 · 3 answers · asked by beeboroachgoingon197 1 in Mathematics

a farmer is taking her eggs to the market, and she drops her basket and breaks all of her eggs. she needs to know how many eggs she had to begin with. when she put them in groups of 2,3,4,5 or 6 there was always one left over. but when she put them in groups on seven, they fit evenly.

how many eggs did she have?

(p.s the answer is not 49)

2007-09-12 13:18:54 · 13 answers · asked by Anonymous in Mathematics

An engineer in a locomotive sees a car stuck on the track at a railroad crossing in front of the train. When the engineer first sees the car, the locomotive is 290m from the crossing and it's speed is 20m/s . If the engineer's reaction time is 0.3s, What should be the magnitude of the minimum deceleration to avoid an accident?

2007-09-12 13:17:48 · 4 answers · asked by Anonymous in Physics

neil armstrong first stepped on lunar surface

2007-09-12 13:17:25 · 7 answers · asked by fc 1 in Astronomy & Space

Does any one know what this quantifier means in English and its truth value?

∀x ∈ Z (X-1 ∈ Z)

2007-09-12 13:16:01 · 3 answers · asked by Carlos 2 in Mathematics

f (x) = x^2 + 1

find the equation of the tangent line at the point (2, 5)
the answer is y = 4x - 3
how do i get to this answer? please show steps and explain them as much as possible. thanks

2007-09-12 13:15:21 · 1 answers · asked by Adam 2 in Mathematics

On June 22, 2007,I was involved in an automobile accident. I know it was a rainy night, however the person who caused the accident is saying that she has witnesess to say they were painting on that day. I know that no reputable painter would paint on a rainy day. How can I find out what the weather was like on that day? Please do not tell me to go to the weather channel. I have been there already and have not been able to get an answer. If you have an answer please respond, if not, please don't waste my time or yours. Thank you

2007-09-12 13:15:07 · 3 answers · asked by Brenda L 1 in Weather

What is its domain?

2007-09-12 13:14:19 · 1 answers · asked by Jenso 1 in Mathematics

2007-09-12 13:08:19 · 2 answers · asked by Carol 1 in Physics

How can you tell the SUM of two numbers is positive or negative?

How can you decide if the DIFFERENCE between two number is positive or negative?

2007-09-12 13:07:44 · 7 answers · asked by sxsupp 2 in Mathematics

2007-09-12 13:06:59 · 3 answers · asked by Anonymous in Other - Science

A motorcycle daredevil is attempting to jump across as many buses as possible. The takeoff ramp makes an angle = 18.6° above the horizontal, and the landing ramp is identical to the takeoff ramp. The buses are parked side by side, and each bus is 2.74 m wide. The cyclist leaves the ramp with a speed of v = 32.0 m/s. What is the maximum number of buses over which the cyclist can jump?

2007-09-12 13:06:19 · 1 answers · asked by Santina E 1 in Physics

An object held in the air has a GPE of 470J. The object is then dropped. Halfway down, what is the objects kinectic energy?

A system has a total mechanical energy of 350J and a kinetic energy of 220J. what is the potential energy?

2007-09-12 13:05:46 · 1 answers · asked by (>_<) 3 in Physics

Please help:
Find all values of a such that f is continuous on all real numbers:

f(x)={x+1 when x is less than or equal to a
{x^2 when x>a

2007-09-12 13:05:19 · 3 answers · asked by Anonymous in Mathematics

constant speed of the horse is 10.0 m/s, and the man is initially 3.00 m above the level of the saddle. (a) what must be the horizontal distance between the saddle and the limb when the man makes his move? (b) how long is he in the air?

2007-09-12 13:04:54 · 1 answers · asked by mary s 1 in Physics

2007-09-12 13:03:49 · 7 answers · asked by hheeyyssuupp 1 in Chemistry

when the pilot releases a radar decoy. The horizontal distance between the release point and the point where the decoy strikes the ground is 700 m. (Neglect air resistance.)
a) How high was the plane when the decoy was released?
m
(b) How long was the decoy in the air?
s

Hints:
the answer are:
898.3m for a
10.04s for b
please just show the working

2007-09-12 13:02:20 · 1 answers · asked by Wonder 2 in Physics

fyi: b is the base of the log

2007-09-12 13:02:04 · 1 answers · asked by Anonymous in Mathematics

2007-09-12 13:01:56 · 13 answers · asked by donmarie b 1 in Astronomy & Space

So I understand that diamonds are stronger than graphite, but diamonds have sp^3 bonds and graphite has sp^2 bonds. And supposedly, nanotubes with sp^2 bonds similiar to graphite are pretty darn strong too. How come graphite isn't stronger than diamonds with its sp^2 bonds?

2007-09-12 12:58:00 · 4 answers · asked by lena 1 in Chemistry

Write two expressions for the area covered by the tiles, one with parentheses and one without parentheses.

___X_______X___1_
1|_______|_______|__|
1|_______|_______|__|

The rectangles are 1x a piece. The 1 squares are 1.

I'm not to good with algebra tiles. I need a little help here. Its that last problem left on my homework.

2007-09-12 12:53:30 · 1 answers · asked by Anonymous in Mathematics

2007-09-12 12:52:23 · 2 answers · asked by Anonymous in Mathematics

absolute value of x-1 minus 2 equals absolute value of 2x-5.
can somebody explain to me how to solve this and not just the answer...plz.....

2007-09-12 12:49:32 · 4 answers · asked by Anonymous in Mathematics

Integral((ds)/(s^2(s-1)^2))

2007-09-12 12:44:19 · 2 answers · asked by garrett m 1 in Mathematics