All Answers 358077 Answers

First of all, it is helpful to put a \$ so it doesnt take it as \(\LaTeX\). If Joe owed Mike 49 dollars on friday, and he paid 23 dollars from it, then you use the 2 numbers, 49 and 23 and make a expression. The expression would be \(49-23\). And \(49-23=26\).

Let the rate of  the freight train  =   R

Let the rate of the  passenger train  be R +  30

The freight ttrain  has  been  traveling for 2 + 3   =  5 hours

And the passenger train has  been traveling for  3 hours

And they  have traveled the same distance   when  the passenger  train  overtakes the freight train

So    using rate * time  = distance we have that

R(5)  = (R + 20) 3      simplify

5R  =  3R  +  60     subtract 3R from  both sides

2R  = 60           divide  both sides  by  2

R = 30   (mph)  = rate of freight train

R +  20  =  50 (mph)    = rate of passenger train

Thank you! 

Excellent, IWTH  !!!!

A "Best Answer "   .

Okay, thanks.

\({x}^{2}+4x+3=-(2x+5)\)

\({x}^{2}+4x+3=-2x-5\)

\({x}^{2}+4x+3+5=-2x-5+5\)

\({x}^{2}+4x+8=-2x \)

\(x^2+4x+8+2x=-2x+2x\)

\(x^2+6x+8=0\)

\(x_{1,\:2}=\frac{-6\pm \sqrt{6^2-4\cdot \:1\cdot \:8}}{2\cdot \:1}\)

\(\sqrt{6^2-4\cdot \:1\cdot \:8}=2 \)

\(x_{1,\:2}=\frac{-6\pm \:2}{2\cdot \:1}\)

\(x_1=\frac{-6+2}{2\cdot \:1},\:x_2=\frac{-6-2}{2\cdot \:1}\)

x=-2

x=-4

My answer: 

first add up all of the individiuals who has [color] hair. 

50+24+5+17=96

and they're asking how many people have blond hair and that is 24

24/96=0.25=25%

@IWantToHelp: There is an edit feature on web2.0calc. If you want to add on to you post just edit it. Instead of posting twice just edit your first post (if you want.)

The question asks: How many times does 42 go into 125? 

simply divide 125/42=2 R41 so the answer is 2

almost 3 though :)

X can be -2 or -4

There are 2 solutions to X.

ik cphill has a faster typing speed than me I think but here's my answer: 

The cost of each pizza is 78/6=13

the cost of each ice cream is 18/6=3

the bill is the total cost of the pizza and the ice cream they spent altogether so 78+18=96

since there are six friends and the bill is equally spit among them six, 96/6=16

What do you want us to solve? Should we solve for x?

Sorry, IWTH.....you sometimes gotta' be  fast on the  draw around here    ...LOL!

However.......you can also post your solution  and  I'll give it a point.....

CPhill is beating me to everything. :)

78/6  =  $13  for each pizza

18/6  =    $3   for each ice cream

Each just   paid   $13 + $3 =   $16

Looking at this another way.....the total  bill = 78 + 18 =  96

Splitting this 6 ways =   96/6 =  $16

If we join the  centers of each circle, we  will  form a 3-4-5  right triangle

The area of this triangle  is     (3*4)/2  =  6

The  angle formed by  the lines joining the  two  lager circles to  the  center of the  smallest  circle  =  90°

So   the area of  the sector  of 1/4  of the smallest circle with a central measure of 90° is pi (1)^2 *(90/360)  =  pi/4

The  angle  (theta) formed  by   joining  the center  of the larger circle with the  two smaller circles can be  forund as

arcsin (3/5)  ≈ 36.87°

So  the  area of  a sector  in the larger circle  with a central measure of 36.87° is given by

pi ( 3)^2  (36.87/360)  ≈  .9271 pi

And in the  circle with a radius of 2 we are  looking  for the area of a sector with a central angle measure  of (90-36.87) =  53.13°  =     pi  (2^2)  ( 53.13 / 360)  ≈  .5903 pi

So.....the area of the  gap  ≈  6  - pi ( 1/4 + .9271  + .5903)  ≈ .448 units^2

By the quadratic formula, the ball will hit the ground in 0.63 seconds.

I think X=1.

\(\frac{a+b}{a}=x\)

\(\frac{a+b}{a}a=xa\)   (I multiplied both sides by A.)

Simplify and it turns into a+b=xa

A+B-B=XA-B (I subtracted B from both sides)

A=XA-B

A-XA=XA-B-XA (I subtracted XA from both sides)

a-xa=-b

a(1-x)=-b

\(\frac{a\left(1-x\right)}{1-x}=\frac{-b}{1-x};\)

So, x=1. I hope this helps.

To simplify this, let them start at (0,0)

Let  them  first walk east-west

Then   one is at  (40,0)   and the other is  at (-40,0)

Then...when each turn left and walk for  30 yars each.....one is at  ( 40,30)   and the other  is at ( -40, -30)

Using the distance  formula

D  =sqrt  [  (  40 -  - 40)^2   +  ( 30  -  -30)^2   ]=

sqrt [  80^2   + 60^2  ]  =

sqrt  [  6400 +  3600 ]  =

sqrt  [ 10000 ] =

100  yds apart

easy ✨✨✨😃

h=52−32⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯√=25−9⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯√=16⎯⎯⎯⎯√=4.h=52−32=25−9=16=4.

so the area of the triangle is 12×6×4=12in.2. there is a triangle in the middle

25% have blond hair

Total people in the  office =  50 + 24 + 5 + 17 =  96

24 / 96   =    1/4   =  25%  have blond hair