In Mr. Porter's equation the initial "d" represents the initial value of the house. The term "+0.21d" represents the increase in value, 21% of its original value (d).
The correct percentage increase is 21%.
Answer:
Exact Form: x = 5 + sqaureroot 11/2
Decimal Form: x = 4.15
I believe it is 5 but i may need someone to double check <span />
The ladder must be 9.4 ft to reach the top of the building
Here, we want to get the length of the ladder that will reach the top of the building
Firstly, we need a diagrammatic representation
We have this as;
As we can see, we have a right triangle with the hypotenuse being the length of the ladder
We simply will make use of Pythagoras' theorem which states that the square of the hypotenuse is equal to the sum of the squares of the two other sides
Thus, we have;