Answer:
1. It is invisible.
2. It does not emit electromagnetic radiation.
Step-by-step explanation:
got it right on the test
In 1 hour Kalon by himself can clean 1/4 of a chimney.
In one hour Kalon and Marna together can clean

Therefore in 1 hour Marna working alone can clean

So, it takes Marna 3 hours to clean a chimney, working by herself.
Answer:
26/3
Step-by-step explanation:
First, you need to turn the fractions from mixed form to improper fractions.
3 1/4 x 2 2/3
13/4 x 8/3
13/4 x 8/3
= 26/3
Answer:
Step-by-step explanation:
Have enou space