Putting a ladder up against a straight wall. The sides of the triangle are:
1: the ladder
2: the walls
3: the ground from the wall to the ladder
Answer:
16.5 ft by 25.5 ft
Step-by-step explanation:
Let w represent the width of the garden in feet. Then w+9 is the garden's length, and w(w+9) represents its area.
The surrounding walkway adds 8 feet to each dimension, so the total area of the garden with the walkway is ...
(w+8)(w+9+8) = w^2 +25w +136
If we subtract the area of the garden itself, then the remaining area is that of the walkway:
(w^2 +25w +136) - (w(w+9)) = 400
16w + 136 = 400 . . .simplify
16w = 264 . . . . . . . . subtract 136
264/16 = w = 16.5 . . . . . width of the garden in feet
w+9 = 25.5 . . . . . . . . . . .length of the garden in feet
Answer:
13x^2 - 15x + 12
Step-by-step explanation:
Add like terms.
3x^2 + 10x^2 = 13x^2
-10x + -5x = -15x
4 + 8 = 12
Answer:
7
Step-by-step explanation:
1/2<u>(48/6)</u> - 2 + 5
<u>1/2(8)</u> - 2 + 5
<u>4 - 2</u> + 5
<u>2 + 5</u>
7
