Answer:
21/4 :3/4= 21/4 *4/3= 7/1 *1/1 = 7
7 bookcases
Step-by-step explanation:
9514 1404 393
Answer:
x = 7
Step-by-step explanation:
The product of segment lengths is the same for the two chords.
9(21) = x(27)
x = 189/27 . . . . . divide by 27
x = 7
When using a calculator I got: 26996.736
However since it's people you should round to: 26997.
Answer:

Step-by-step explanation:
The given triangle is a 45°-45°-90° triangle. Use the following rule:

The length of the legs is 4. Insert this value into the equation:

Simplify:

:Done