Answer:
40 and 60
Step-by-step explanation:
the answers are 40 and 60
A: x (isabella)
3x+x=36
b: 3x+x=36
4x=36
x=9
3x=27
c: Joseph is 27 years old.
Use the difference of squares factorization - that for any numbers a and b, (a-b)(a+b)=a^2-b^2.
We have:
(x^2+1)(x^2-1)=x^4-1
In addition:
(x-1)(x+1)=x^2-1, so we have:
(x^2+1)(x+1)(x-1)
As our complete factorization.
Given the Scale of the Drawing as 3 : 1000
It means in the Drawing a Length of 3cm is Equal to 1000cm of the Actual Pool
It means in the Drawing a Length of 3cm is Equal to 10m of the Actual Pool
Given the Length of the Pool in the Drawing is 15cm
⇒ Actual Length of the Pool is 5 × 10m = 50m
Given the Width of the Pool in the Drawing is 7.5cm
⇒ Actual Width of the Pool is 2.5 × 10m = 25m
We know that Area of Rectangular Pool is Length × Width
⇒ Area of the Rectangular Pool = 50 × 25 = 1250m²