April 2, 2015

Homework Help: math

Posted by joe on Tuesday, January 9, 2007 at 9:26pm.

belinda if ur still here to help i would appreciate it so much but 5z-2 (5z-2 is under a radical sign) +7=10

anyone else who knows how to solve this with it coming out equal please help thanks again :)

wow, I am SO incredibly stupid 3 times in a row! When you get to 5z=11, you divide 5 by each side and get z=11/5. When you plug it in, 5(11/5)=11, then -2=9. The sqrt of 9 is 3 and 3+7=10. Wow.

Is it (sqrt 5z-2)+7=10
If so, then
sqrt(5z-2)=3. Square both sides.
Check me out on that.

thanks belinda and no your not incredibly stupid i did the same thing, unless i am incredibly stupid lol

it still doesnt come up even???wierdi plugged it in and the square root of 5(1.2)-2 plus the 7 does not equal 10?
it come up to only 9 ? im confused :(

OK. 11/5 is not 1.2! 11/5 is 2.2. sqrt(5(2.2)-2)+7=10.

Answer this Question

First Name:
School Subject:

Related Questions

math - what is the square root of 5z-2, then it says plus 7=10 First, subtract 7...
math - Can somebody please help me with this problem? This is the index- 5 6^-...
algebra - solve the equation or formula for the indicated variable R=ts^2+3 a)s=...
Math - Could someone please help me solve this radical equation of 2x+7-2=x It's...
geometry - abcd is a rectangle such that ab=-3 radical sign 48+2 radical sign 75...
Math - I need some help please. I dont understand the math that we are doing. ...
math,correction - Simplify by combining like terms. Problem #32 radical (63) - 2...
Alg 1 - Simplifying Radicals A gardener is mowing a 20-yd-by-40 yd rectangular ...
radical equation - no solution right? - radical sign (w + 5) = 2 In all my ...
math, algebra,correction - I don't know if this is right. directions: Simplify ...