Question

Plz help ASAP!!!!!!!!!

Answer 1

4√5 ft.

Explanation:

Using pythagoras theorem:

let a represent how high is the ladder from the house.

a^2 = 12^2 - 8^2

a^2 = 144 - 64

a^2 = 80

a = √80

a = 4√5 ft.

Answer 2

b= 8.9 or 9

Explanation:

In order to find the length of this side, we need to use the pythagorean theorem. That is,
`a^(2) +b^(2) =c^(2)`.

Step 1- Substitute the equation with the given lengths.

a^2+8^2= 12^2

Step 2- Multiply to simplify.

a^2+64= 144

Step 3- Subtract 64 to both sides.

a^2+64= 144

-64 -64

a^2= 80

Step 4- Find the square root.

`\sqrt{a^(2)`
`=√(80 )`

a= 8.94427191

a≈ 8.9 or 9

Hope this helps! :)