All Answers 358233 Answers

Oh because i g to a public school

Use the base and the height of the right triangle in place of a and b.

c will be your answer (the hypotenuse)

sqrt(a^2+b^2)=sqrt(c^2)

sqrt(a^2+b^2)=c

Mmmmmm....this looks interesting  !!!

I'm assuming that the problem is supposed to have stated that they arrived home at the same time....

Let Sian's time on the bike [in hours] = S

So the distance he rides  = rate * time =  12S

So....the distance he walks =  16 - 12S

Call Ella's time on the bicycle (in hours) = E

And the distance that she rides = rate * time = 10E

And the distance that Ella rides = Sian's walking distance

So.....10E  = 16 - 12S

So E  =  [16 - 12S] / 10

And Sian's walking distance / his walking rate  = the time he walked =  [16 - 12S] / 5

And Ella's walking distance / her walking rate = the time she walked = [16 - 10E] / 4 =

the distance that Sian rdes/ her walking rate  =  12S / 4  = 3S

And since they begin and end at the same time....

The total time that Sian rode + the time he walked  =  the total time that Ella walked + the time she rode  ......so we have....    

S + [16 - 12S] / 5   = 3S  + [16 - 12S]/10

-2S  =  ( [16 - 12S]  - 2[16 - 12S] ) / 10

-20S   = 16 - 12S - 32 + 24S

-20S  = -16 +12S

-32S  = -16      divide both sides by -32

S = -16/-32

S  =  1/2    [hours]   =   30 minutes  = Sian's time on the bike.... [just as Solveit predicted.....!!! ]

Note that each travels for 2.5 hours........

I am online schooler

If u don't know that i suggest that u go see a first grade teacher also get a life 

I find more private than public..

A lot of people here go to public or private.. I don't know 

I am homeschooled

There are a lot of non homeschoolers here

I guess so, LOL .. Public school for me 

Omg dude thats AMAZING!!! I wish i was as good as u at drawing

Danget it happened again :(

Ok thanks😅

Well....let's pretend that it's a perfect world  and the mower is contiuously cutting grass

And let's pretend that the plot of land is exactly 3ft wide  and it covers 4 acres

The number of sq ft in 1 acre = 43560

Then the  length  of one acre  = 43560/3 = 14520 ft

So....4 acres must be 4 times as long = 58,080 ft

And converting this to miles, we have   58,080/ 5280 = 11 miles  =  distance the mower  traveled in two hours

The car covers 132 miles in  the same time period

So...the car must be   132/ 11   = 12 times as fast

I know it's a weapon, I was making fun of admin, because you could assume that it was a weapon based on how the guy is holding it. Or you could know that this is Captain Rex and that is his preferred weapon. But If you just take the weapon by it's self, The way the angle is, you could mistake it for not being a weapon but being a steel beam.

We can turn this into log form

ln4=.06t

ln(4) = 1.3862943611198906

1.3862943611198906/.06 = 23.1049060186648433333

23.105=t

It looked like a weapon to me...

I assume we are trying to find S?

-2(s+6)<-2s+8

s+6>s-4

6>-4 which is true

OR

-2s-12<-2s+8

s+6>s-4

6>-4

What!?!?!?!?

I don't understand you. It is a DC-17 hand-arm blaster

QUICK DS, BLUR OUT THE FANTASY WEAPON THAT LOOKS LIKE A STEEL BEAM AND NOTHING LIKE A WEAPON.

Wow CPhill, taking the easy route are ye?

Wow... okay I think I need some sleep or coffee or both. Thanks so much!

That is really great pic! And that is nice to know Admin...

This isn't as tough as it looks, Shades.....

Note .....A = 15°

So

Cos (2A)  =

Cos (2 *15)  =

Cos(30)  =

√3 / 2

Since 15 degrees is in both, we can let that equal A

So what we have after substituting A for 15 degrees is 

cos²A - sin²A

That equals Cos2A

So we can substitute 15 degrees for A

So we get cos2(15)

Cos30

The cos of 30 degrees is 

pi/6

So all solutions to this are pi/6 +2(pi)(N) where N is any real integer