Reba made a mosaic wall using 42 black tiles and 23 red tiles . what percent presents the number of red tiles in the mural

Step-by-step explanation:

First you have to figure out the total.  

42+23= 65

So plug it in.

23/65 = 35%

Your answer is 35%.

Hope this helped

35.4%

Step-by-step explanation:

Total of tiles:  42+23= 65 tiles

red tiles/ total amount of tiles

23/65= 0.3538= 35.38%

rounded to the nearest tenth= 35.4%

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.