Math&141

[Anonymous No.1557305]

Solve the equation for the given variable. Round your answer to the nearest tenth. 13 -4(y + 7) = 5.3 + 3(0.3 y + 1)

They give the answer to be -4.8, but I keep on getting -32.7/-4.9

Halp plux

[Anonymous No.1557341]

BUMP SOLVE ME

[Anonymous No.1557379]

you must have put a minus sign on 4.9y, cause i got -4.8 as my answer

[Anonymous No.1557399]

>>1557379
How come it wouldn't have a minus sign? I'm confuzed. Thanks in advanced for the help good sir.
I get down to:
13-4y+28=5.3+.9+3
-4y+41=8.3+.9y
-4.9y=-32.7

[Anonymous No.1557423]

TO THE TOP WE GO

>earwigs different

[Anonymous No.1557426]

>>1557399
Error in the first line. 13 - 4(y+7) = 13 - 4y - 28

[Anonymous No.1557428]

13 -4(y + 7) = 5.3 + 3(0.3 y + 1)
13-4y-28=5.3+.9y+3
-15y-4y=8.3+.9y
4.9y=-23.3

[Anonymous No.1557454]

>>1557426
13 - 4(y+7) = 13 - 4y - 28
Thank you, sir.
>>1557428
13-4y***-28***=5.3+.9y+3 >I FORGET THE NEGATIVE GOD DAMNIT.
>-15y-4y=8.3+.9y
>4.9y=-23.3

Thank you guys <3

[Anonymous No.1557495]

Solve the following for x in terms of y: y=x/(4 - x) Assume x (does not equal) 4.

Answer: 4y/1+y
When I get: x=4y - xy
wtF??
f23faaga43g34g3q4g

[Anonymous No.1557525]

can't have x on both sides of the equation when you're solving FOR X noob

[Anonymous No.1557532]

>>1557525
But he's solving for y, not x.

[Anonymous No.1557537]

It took me 5 s to copy and paste your equation into Wolframalpha. Why don't you high school kids know how to use it to solve simple algebra problems?

[Anonymous No.1557543]

he's solving for x in terms of y, meaning whatever x is equal to in relation to y

[Anonymous No.1557544]

>>1557525
...

>>1557532
I love you

[Anonymous No.1557591]

>>1557537
>college
I did as well and there is no answer, faggot.
Now, as I was saying. Wtf?

[Anonymous No.1557597]

>>1557591
>herp derp. I'm a massive idiot please kill me.

http://www.wolframalpha.com/input/?i=13+-4%28y+%2B+7%29+%3D+5.3+%2B+3%280.3+y+%2B+1%29 guess what. It's solution is -4.8

[Anonymous No.1557605]

Hahahaha, that image makes me laugh for at least 30 seconds every time! Guess it's about time i saved it.

[Anonymous No.1557620]

>>1557597
HURRRR. Wrong fucking equation, doucher.

[Anonymous No.1557630]

NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t) = -4.9t^2 + 262 t + 332.

How high above sea-level does the rocket get at its peak?

>help

[Anonymous No.1557646]

>>1557630
Derivate to get the velocity equation, find time for v=0, ????, PROFIT.

[rawrs !8yF//RaWRs No.1557656]

>>1557630
this may sound stupid but when nasa launches a rocket, unless something goes wrong, doesn't it go into space?

[Anonymous No.1557663]

>>1557620
>hurr

Yeah, that sums you up. It's the correct question numb nuts.

[Anonymous No.1557666]

>>1557656
I guess they also launch rockets that don't go to space. You know, research...

[Anonymous No.1557686]

>>1557656
That's a not a rocket that was launched but a projectile shot a velocity 262m/s. High school intro to physics problem.

Real rockets are wee bit more complicated.
http://my.execpc.com/~culp/rockets/rckt_eqn.html#Example Start here.

[Anonymous No.1557701]

>>1557656
unless it maintains escape velocity, that rocket isn't headed for space. l2experiments

[rawrs !8yF//RaWRs No.1557707]

>>1557686
that is what i was thinking, i was just wondering why the term rocket was in that statement, also the maximum hight is 187878/49 meters

[Anonymous No.1557720]

>>1557707
If a projectile looks like a rocket, and it has an initial boost, can't you call it a rocket?
Aren't you guys being a little bit pedantic? I mean, that's high school physics right there, who cares if it's a rocket or not?

>foxtrot 'forward'
this captcha rocks

[Anonymous No.1557751]

>>1557720
Is the shuttle, a shuttle, a rocket or an orbiter?

[rawrs !8yF//RaWRs No.1557772]

>>1557751
it is an orbital spacecraft, in has a rocket/s on the back so i guess you could call it a rocket.
the definition of a rocket is: A rocket or rocket vehicle is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine

[Anonymous No.1557780]

Um..
Grade 8 math? lol
If you have trouble with this, go talk to your consellor and drop out of the math course. Take wood shop