The area of a rectangle is pool is (15x-9) square units. factor 15x-9 to find possible dimensions of the pool

3 and (5x-3).

Step-by-step explanation:

The area of a rectangle is

It is given that the area of a rectangle is pool is (15x-9) square units.

We need to find the factors of (15x-9), to find the dimensions of the pool.

It can be rewritten as

It is clear that 3 is GCF.

Taking out GCF, we get

Since the area of a rectangle is the product of its dimensions, therefore 3 and (5x-3) are dimensions of the pool.

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.

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24