5/6 * 1200/1 = 6000/6
6000/6 = 1000
Alexander pay $1000 for the computer.

This is an exact answer. the answer will be a bit larger than 20
Answer:
A. 22.5 cm, 30 cm, and 37.5 cm
Step-by-step explanation:
If three sides of a triangle are in the ratio 3:4:5, then the lengths of the sides are 3x cm, 4x cm and 5x cm.
The preimeter of the triangle is the sum of the lengths of all sides, thus

So, the lengths of the triangle's sides are

Answer is 9/2 because
0/8+3/2+/32
4/0+0/32
Simplified 9/2