can anyone help me with my math please?
Please post the problem that's giving you trouble and explain what you don't understand. Someone will be glad to help you.
I am having trouble setting up this equation. Can you assit me ?
[CUBERT(2x + 9)]=3
Cube both sides.
Solve for x.
Would cube mean mutiplu by 3?
By the way thank you dr bob for all of your help. I really appreciate it.
No, multiply by itself twice, not by three. Cube means to the third power.
Ok thanks. also do you know how to solve this ??
y= 2[SQRT(x - 1)]
This is what I am being asked
Give the domain (that is, possible values of x):
To amplify a little.
3^2 = 3*3 = 9
3^3 = 3*3*3 = 27
3^4 = 3*3*3*3 = ?? you get the idea.
Now, sqrt 9 = 3
cube rt 27 = 3
One more:
sqrt(x+2)^2=x+2
OK?
Thank you. IS this the problem I just sumbittted to you?? and if so how do I get to that??
Notice that when you square the square root of something, you just move the something out of the square root.
sqrt (x+2)^2 = x+2
same for cubing a cube rt.
cube rt (x+3)^3 = x+3
As for the y = 2*sqrt(x-1), do it the same way by squaring both sides, then factor. At least that's what I would do. Damon is the expert with this, not I.
Thank you
ALSO LET ME ASK you if you know the answer to this word problem...How would I solve this one...IF you are still there..because i notice that you are very talented at the cubert thing.
How tall is a stack of cube-shaped blocks whose volumes are 375 cubic inches, 648 cubic inches and 1,029 cubic inches?
The answer choice is
A10 cubert(3)
B6 cubert(3)
C3 sqrt(3)
D4 sqrt(3)
E9 sqt(3)
F18 cubert(3)
find the edge length of each
E1=cbrt375=7.2
E2=cbrt648=8.65
E3=cbrt1029=?
now add the three edge lengths, and you have the height.
To get a cbrt on your calculator, do this
1029 yx (1/3)=
and yx is a key on your calculator.
To get it on the google calculator, paste the following in your google search engine window on your internet browser.
1029^(1/3)