If 4 more than two times a certain number is 3 less than the number, what is the number

3

Step-by-step explanation:

If 4 less than 3 times a certain number is 2 more than the number

Let the number be x

First, three times of number is 3x

Then 4 less will be (3x - 4)

Two more than number is (x + 2)

Hence the algebraic equation will be

3x - 4 = x + 2

Now solving this equation

3x - 4 = x + 2

3x - x = 2 + 4

2x = 6

x = 6 / 2

x = 3

Thus the number is 3

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.

step-by-step explanation: