15 POINTS PLS HELP What is the area of this figure?

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_ mm²

24mm²

Step-by-step explanation:

Step 1: 4x3=12

Step 2: 1x6=6

Step 3:12÷2=6 (the triangle is half the size of the rectangle, so the rectangle has to be divided by 2 to get the area of the triangle)

Step 4: Add all the totals up

12+6+6=24

24mm²

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.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,