All Answers 358090 Answers

Let time = t,  Speed = Distance/Time. Then we have:

30(t+1) =40t, solve for t

t =3 hours - or about 1:00 pm, when car B catches up with car A.

We can use logic here :

Note that when Car B started......Car A has already traveled 30 miles.......so.....Car B must make up a 30 mile gap

And the difference in speeds  is  40 - 30  = 10 mph

So.....Car B  makes up a 10 mile gap every hour.....so.....it must take Car B  3 hours to catch Car A, i.e, at  1 PM

It is actually fish

Mean  =   [ Sum of the numbers ] /  [ The number of data values ]   =

[ 1 + 2 + 3 + 6 + 7 + 9 ]  /  6     =

[28 ] / 6   =

14 / 3 =

4 + 2/3    =   4.6666.....

The answer 4.6666

Sorry , Supergirl, but there's no way to answer this unless we know what function we are dealing with.

Either 3 or 6, I think. 

Since it's a cube, all the sides are the same......that is.....width = length = height

So.......the amount of wrapping paper represents the surface area

And the surface area   =  6* (side)^2  =    6*(11)^2  =  6 * 121   =  726  cm^2

There is no function given though. That was everything the question provided 

You need to supply the function to us......!!!!

log5^(2x+1)=log8 

Assuming  that  both logs are to base 10, we can just solve this :

(2x + 1) * log 5  =   log 8        divide both sides by log 5

2x + 1   = log 8 / log 5        subtract 1 from both sides

2x  =   log 8 / log 5   - 1      divide both sides by 2

x  =   [ log 8 / log 5  -  1]  /   2  ≈    0.146

a)   200 =  -4.9t^2 + 86t + 2.1     subtract 200 from both sides

0  =  -4.9t^2 + 86t - 197.9    using the quadratic formula.....we have

t  =    [ -86 ± √ [ (86)^2  - 4 ( -4.9) (-197.9) ] ]  /  (2 * - 4.9)

Evaluating this.....we have that ....   t  ≈ 2.7 seconds  and t ≈ 14.8 seconds

b)  0  = -4.9t^2 + 86t + 2.1  

Again, using the quadratic formula we have  ≈    17.575 seconds

3n*x-12

The Calculator says 0

You got music in??? 

-deathrises101

X=-13

Which language are you using?

Just enter the problem into the calculator. You'll get 10.0184942017404375, just round it down to whatever the problem asks for. 

-4 / 5k    =   7  / 9   cross-multiply

-4 * 9   =  5k * 7      simplify

-36   =  35k       divide both sides by 35  

-36 / 35   =   k 

0.04347826086

Wrong

Answer is -75