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The mother is obviously taller.....so the ratio of mother to baby should be  more like  4 to 1

  if mother is 4 baby heights     then ration of mother to baby is   4 baby heights to  1 baby height     or    4 to 1

I get x = 8 also

Multiply the left side by     15 /( z^4 sqrt (14z))  and then reduce everything   to find   'x'  = 8

Oh! That makes more sense!

Thanks EP!

:)

thanks, im such an idiot.

I don't think they are points....they are lines between the points....

Y = mx + b    form to start....then conver to   ax + by form requested

y = 5/3 x + b    sub in the given point to calculate 'b'

-3 = 5/3 (4) + b

b = - 29/3

y = 5/3 x  - 29 /3         now multiply the entire equation by  '3'  and re-arrange to the requested form   ....

I agree with Melody. Sometimes, people may not know how to answer the problem, and then they skip it and move on to a different problem. (like me, sorry for being picky...)

Also, if you are actually confused about this question, and don't want to confess it, you could post anonymously, (but then what's the purpose of creating an account?)

Nobody is calling you a liar, as that is rude. But, if you really need help with the problem, just say that you need help. Nobody is here to judge you (unless you are rude about your question...but that is not judgement...that's just discipline) It also increases the posibility that your question is answered :)

Concerning the math question that you had...I'm confused...how do you multiply\add points? Anybody able to explain? (maybe even you, TigerNathan, as you solved the problem already) It would be good for my learning experiance.

:)

RIGHT click on the  blocked image     then    ' Copy image location'    then paste into browser tab.....

From third equation   y = 1/4  z  + 2.075

From second equation   x = 2 - 9/7 z                 Use these values of 'x' and 'y' in the FIRST equation to solve for 'z'

                 then the 2nd and 3rd equations will let you calc  x  and  y

There are 3 rectangular sides   10 x 7     6 x 7     and      8 x 7

   and TWO triangles      TWO x   1/2  6 x 8

      add them all together to get        ........ m²

How did you get the question EP?

If you were to draw UV and TW, you would create triangle(SUV) and triangle(SWT).

By AA, triangle(SUV) is similar to triangle(SWT).

Therefore:  SU / SV  =  SW / ST     --->     SU · ST  =  SW · SV

Let  SV = x,  then  SW = x + 3.

SU · ST  =  SW · SV     --->     ( 18 )( 3 )  =  ( x + 3 )( x )

                                      --->               54  =  x² + 3x

                                      --->                 0  =  x² + 3x - 54

                                      --->                 0  =  (x + 9)(x - 6)

--->   x  =  6

From here, you can find the value of SW ...

rate  x  time  = distance

Yo have the right idea   BUT   from t= 1    to  t = 4    is THREE minutes  .....not  four.

.5 m/m    *   3   min   = 1.5 miles

Why are you drawing people's attention to this question?

You only posted it an hour ago, which is almost no time at all

AND

you say you already know how to do it.

It might be graphed on the y axis but it is not the y axis.

It is the units I am interested in.

mpm, miles per minute, is unusual units.  The time is given in seconds, which is 1/60 of a time unit.

I cannot see the question but I expect that is where the confusion lies.

Your picture has been blocked.  What is the question?

yea. its the y axis.

mpm?  is that miles per minute?

I also thought it was B because having a larger sample size is usefull.

A and B are very similar answers. 

thats exactly what i thought too

but in the question they said "  predict how the residents of NJ will react" Would that not imply that the residents of NJ need to voice their opinions and not the country as a whole?

@CalTheGreat, it says it wants to predict it in New Jersey, not the United States.

S = Speed of passenger train:

180 / S  = 120 /(S - 15), solve for S

S = 45 mph