# math

posted by .

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.
5z-2=9
5z=9+2=11
z=11/5
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.

## Similar Questions

2. ### math

what is the square root of 5z-2, then it says plus 7=10 First, subtract 7 from each side so you now have: sqrt(5z-2)=3. Then square each side, so you now have: 5z-2=9. Then add 2 to each side so you have 5z=11. Then divide each side …

I have a few match problems that I can't figure out. 1.solve: 3x+5=x√7 (that's a radical sign) 2.factor: (2k+3)2-(2x+3)(y-2)-20(y-2)2 (the "2" after (2k+3) ans (y-2) is suppose to be a square sign. thanks if you can help, or …
4. ### Math

I need some help please. I don't understand the math that we are doing. Please explains to me in detail how to do radical expressions and like how to simplify them and stuff. I don't get it and it would be much appreciated. here is …
5. ### Math (Algebra)

Solve using the multiplication principle -7x <_ 35 the sign is an inequality equal greater or lesser than sign would I substitute the sign for an equal sign and then divide 35 by -7 x=-5 -7 x -5= 35 how would I write the solution …
6. ### ALGEBRA

Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 -7x (greater then or equal to sign here) 14. I know I am to collect like terms …
7. ### ALGEBRA

Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 -7x (greater then or equal to sign here) 14. I know I am to collect like terms …
8. ### Math

Could someone please help me solve this radical equation of 2x+7-2=x It's suppose to have the radical sign but I don't know how to put it on here. Thank you
9. ### algebra

solve the equation or formula for the indicated variable R=ts^2+3 a)s=under radical R-3/t (not under radical b)s=everything under radical R-3/t c)s=R (under radical)-3/t d)s=everything under radical R/t-3 Thanks again I feel really …
10. ### Math

The area of one of the faces of the cube below is x^2+2x+1 cm^2. Find an expression in mixed radical form for the length of the interior design. My Work: Step 1: a^2 + b^2 = c^2 =(x-1)(x-1) x-1 equals to all the sides of the cube Step …

More Similar Questions

Post a New Question