Combine like terms. 2z+9-z+3

z + 12

Step-by-step explanation:

Combine like terms (terms with the same amount of variables).

2z + 9 - z + 3

(2z - z) + (9 + 3)

z + 12

z + 12 is your answer.

~

z + 12

Step-by-step explanation:

This is the answer because:

1) Our like terms are 2z and z and 9 and 3

2) First, we should add 9 and 3 because they are like terms and there is a + sign in front of the 3 which equals to 12

3) Then, subtract 2z and z because they are like terms and there is a - sign in front of the z which equals to z

4) Finally, we are left with z + 12. This expression is simplified because there is no more like terms

Hope this helps!

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

answer: its c because when it has a magnet next to it it will move away from the mixture. hope this

step-by-step explanation: