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Ok, nevermind this question! Pretty sure is't correct. Thanks for even cilck in this question.

Well... technically... no. But really really close, so it doesn't matter too much. To be more exact, 369/49 is equal to 7.5306122448979592... that's as far as the calculator takes it but I'm assuming there are many more decimal places that aren't just filled with 0s. 

y = (1/2)x-4

First let x be some convenient  value, say, 0

So we have

y = (1/2) * 0   - 4  

y =  0 - 4

y = -4      ....sp....we have the point (0, -4)  on the graph

Next, let x be any other value.....I'll use 2

y = (1/2) * 2   - 4

y = 1 - 4

y = -3  .......so.......we have a second point, (2, -3).....plot this

Now.......draw a line though the two points.....voila !!!.....there's your graph !!!

IDK

1+1=2

For every whole number, there's an invisible decimal point at the end.

Example: 3,868,000,000=3,868,000,000.

There are always infinite 0s after the decimal point.

Example: 3,868,000,000.=3,868,000,000.000000000... ...

So to convert a whole number to a decimal, all you have to do is add the decimal point and 0s at the end of the number.

LOL!!!!.......looks like we ALL had the same "Train of Thought"

Believe or not, it is called " 4 divided by 5", unless you are very sophisticated mathematician talking to other mathematicians, in which case it might be abbreviated to "4 by 5"!!.

You add all the numbers together, then divide the total by the amount of numbers.

For example:

Find the mean of 4, 5, 6, 9

1. Add all the numbers together:

   4+5+6+9=24

2. Count the numbers

    There are 4 numbers.

3. Divide the total by the amount of numbers ( divide the answer of Step 1 by Step 2 )

   24/4=6

   Therefore the mean of 4, 5, 6, 9 is 6.

99%  = 99 / 100

This is the formula you would use to calculate the monthly payments on the car loan:

PV=P{[1 + R]^N - 1.[1 + R]^-N} R^-1}

20,000 = P x {[1+0.06/12]^(5*12) -1 x [1+0.06/12]^-(5*12) x (0.06/12)^-1}

20,000 = P x {[1.005]^60-1 x [1.005]^-60 x (1/0.005)

20,000 = P x 0.348850 x 0.741372 x 200

20,000 = P x 51.72552444

P = 20000 / 51.72552444

P =$386.66 monthly payments on $20,000 car loan @ 6% comp. monthly.

A man on a railroad platform observed that a train passed by the point where he was standing in 10 seconds, and that the same train passed completely through a station, which is 308 meters long, in 24 seconds. How long was the train and how fast was it going? Thanks for help.

Let L be the length of the train  [ in meters ]

Then......in the first situation......it's rate can be modeled by :    Distance traveled / time =

rate  =  L /10   

In the second situation.....if we consider the back of the train, it travels [ L + 308] m in 24 seconds   = rate

So.......equating rates, we have that

L / 10  = [ L + 308] / 24   cross multiply

24 L   = 10 [ L + 308}    simplify

24 L  = 10L + 3080

14L  = 3080

L =  220 m

And we can use L/ 10 to find its rate  = 220 m / 10 s    =  22 m/s

  :

Thanx for the correction Chris.....   '1' by the definition is not considered a prime number.

What mean do you mean? 

YOU GO TO HOGWARTS BECOME A WIZARD

YOU GO TO HOGWARTS BECOME A WIZARD

A prime is a natural number that has no positive divisors other than 1 and itself

2 is the only even prime

The rest are   3, 5, 7, 11, 13, 17........etc.

Let the speed of the train=S,
Let the Length of the train =L, so we have:

L/10 = S, and
[308+ L]/24  =L/10, solve for L
L=220 meters long
S=22 m/s=speed of train=79.2 km/h

que?

A man on a railroad platform observed that a train passed by the point where he was standing in 10 seconds, and that the same train passed completely through a station, which is 308 meters long, in 24 seconds. How long was the train and how fast was it going?

\(train \ l_t\)

\(speed \ v\)

\(station \ l_s=308m\)

\(platform-time \ t_p=10sec\)

\(station-time \ t_s=24sec\)

\(v\times t_p=l_t\)

\(v\times t_s=l_t+l_s\)

\({\large v=\frac{l_t}{t_p}=\frac{l_t+l_s}{t_s}}\)

\(\large \frac{l_t}{10sec}=\frac{l_t+308m}{24sec}\)

\(24l_t=10l_t+3080m\)

\(14l_t=3080m\)

\(l_t=220m\)   Train length

\(\large v=\frac{l_t}{t_p}=\frac{220m}{10sec}\times\frac{km}{1000m}\times \frac {3600sec}{h}\)

\(v=79.2\ km/h\)   Speed

  !

ur mom

0.25x -6 = 17  add 6 to both sides

0,25 x  = 23      divide both sides by 0.25

x = 92

Substitute this vakue into the second equation  for x

0.07 (92) + 0.4y = -2  simplify

6.44 + 0.4y   = -2      subtract 6.44 from both sides

0.4 y   = -8.44    divide both sides by 0.4

y = -21.1

I'll leave the check for you......

10.8 / (-9) = - 1.2 = c

All of the integers >= 1 that have only 2 divisors...1  and the number itself    1 3 5     19   23       83   etc etc   (there are lots in between my examples)