Answer:
x = 3. (Refresh if you cannot see the explanation.)
Step-by-step explanation:

12 red and 36 blue pens. 12/36 = 3/9 so the ratio is correct, and 12+36 = 48 workers.
Answer:
100
Step-by-step explanation:
In a 45-45-90 triangle, the hypotenuse is always larger than either of the legs by a factor of
. x is therefore:

Hope this helps!
Answer:
Not Proportional
Step-by-step explanation: