Answer: 12x - 17
Step-by-step explanation:
To find QR subtract PQ from PR
15x-11 -(3x+6) ---> 15x - 11 - 3x -6 = 12x -17
Answer:
the factors of f(x)=x^3+8x^2+5x-50 are (x-2)(x+5)(x+5)
Step-by-step explanation:
We need to factorise the function 
If a number is a factor of this function than it must be completely divisible by last co-efficient. Our last co-efficient is -50
Checking few numbers:

So, f(2)=0 which means x-2 is a factor of the given function. Now we will perform long division of
by (x-2) to find other factors
The long division is shown in figure attached.
After long division we get: 
The equation
can be further simplified as: (x+5)(x+5) or (x+5)^2
So, the factors of f(x)=x^3+8x^2+5x-50 are (x-2)(x+5)(x+5)
So scale is 1:30
that mens that if the legnth of a scale wall is x then the legnth of the realll wall is 30x
legnth=3 inches
width=4 inches
actuall is
legnth=3 times 30 inches=90 inches
width=4 times 30 inches=120 inches
area=legntht imes width
90in times 120in=10800 in^2
answer is area=10800in^2