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Blondie....your second answer is good....the first isn't quite correct....we have....

(-2x)^2     and when x = 4, we have

(-2 * 4)^2   =   (-8)^2  =  (-8) * (-8)   = 64

what equals 18,288 and the top number is 508;

508/?=18,288,

?=508/18,288

?=1/36

³root(108) = ³root(3^3 x 4)  =  3*[³root(4)]   answer B

I'm not great at Physics, Rosala, but I'll try....if the brakes are applied, the acceleration must be negative....since the train is slowing down!!!....so we have

(Vf)^2 = ( Vi )^2 + 2AS    where  Vf  = the final velocity [0], Vi is the initial velocity[90km/h] , A is the acceleration = [-0.5m/s^2]   and S is the displacement [stopping distance]   ....so we have

0^2 = (90km/hr)^2  + 2(-0.5m/s^2)*S

But.....so that the units are the same, we must convert the 90km/hr to m/s......since there are 3600 seconds in one hr  and 1000m in 1 Km....we have

90km/hr  x  1 hr / 3600 sec   x 1000m/ 1 km =   25m/s

And (25m/s)^2 = 625m^2/s^2

Now we  have ..... [0^2 = 0]

0 = 625m^2/s^2 + 2(-0.5m/s^2)*S   subtract the 625m^2/s^2 from both sides ................. [ and 2 * -0.5  = -1]

-625m^2/s^2  = -1m/s^2 * S      multiply through by s^2

-625m^2 = -1m *S   divide through by -1m

[-625m^2] / [ -1m] =  S =   625m   to stop  the train

[ I think this is correct..... I hope  !!! ]

idk

Check to see if your equation is written right.

the sum of a number and its additive inverse is ___________ ? 

The answer is always=0, because it means that if  you have number 5, its additive inverse is -5, and vice' versa. So, 5 + (-5)=5 - 5=0.

What is the cubed root of negative one hundred sixty two?

(-162)^1/3=-5.45136618..........etc.

This equation maybe able to help you!.

 V²=U²+2AS,
WHERE V=FINAL VELOCITY
               U=INITIAL VELOCITY
               A=ACCELERATION
               S=DISTANCE OF ACCELERATION
        
 

41/22 in a decimal =1.86363636363..........etc.

I was coming through the forest to sole this , then the calculator came and he asked and I told him about this and he said " I'll solve it" and now he's going back inside the computer after solving it so go find him and k**l him before he enters inside the computer or else if you don't , he will trouble you though those video games.......clap if you can't understand what I'm saying! ;P

Give me answer instead of flagging

The symptoms are ; you can't learn anything ! 

I think that should be enough!

whoa this forum is so crowded! Looks like the guests are ruling ......... Oh somebody somebody give me space please, don't hide my identity .....hey don't step on my foot......ohhhh.....

anyways , I've got braces today.....they've only put those dots of steel and not any wire yet.......I'm unexpectedly looking fine .............but I'm not feeling comfortable!!!!!!

if you want to diet....get  Yourself braces....

a = -64

b = -32

Write the equation using function notation. Through (-4,-5); parallel to 3x+4y=7

y = -(3x)/4-8

what is dimensional analysis

analysis using the fact that physical quantities added to or equated with each other must be expressed in terms of the same fundamental quantities (such as mass, length, or time) for inferences to be made about the relations between them.

I hope you understand that!. Good luck.

4X= -36 is x 9, -9, -40, or 40? The answer is x 9=X

in which order from greatest to least do these numbers go? 

-1 2/5, (-1)*2 (that means exponet),  -1.4 (with a line over the 4) and (1/2)*2  (2= exponet)

From Greatest to Least should be:

1, 1/4, -7/5, -1.4444444.....

-1.4 with a line over 4, that means that the 4 repeats forever.

Good luck.

THANK YOU SO MUCH!!!! 

To CPhil

Here's a pretty good primer :   http://www.chem.tamu.edu/class/fyp/mathrev/mr-da.html

-1.4 [repeated 4] , - [1 + 2/5 ], (1/2)², (-1)²  

[The last two terms are 1/4 and 1, respectively ]

awsner is 20 

Proof:  [ let a > 0....so -a < 0 ....and let 2n + 1 be some odd integer]

(-a)^{2n + 1}     =

(-a)²ⁿ * (-a) =

(-1 * a)²ⁿ * (-1 * a) =

(-1)²ⁿ * (a)²ⁿ * (-1)* (a)  =

(-1²)ⁿ * (a²)ⁿ * (-a)  =

(1)ⁿ * (a²)ⁿ * (-a)  =     [1 raised to any power = 1....so we can ignore this term ]

(a²)ⁿ * (-a)    ....      and a²  for any "a" not equal to 0 is always positive....and a positive raised to any power "n" is also positive....so....the first term is always positive....and since -a < 0, the entire expression is < 0

10+10= 1010

good job