Don’t understand what your asking in the first one. Choosing a vowel out of the word counting would be 3/8. And picking a consonant out of the word prime would be 3/5.
Hey there mate!
Please check the attached answer of picture for explanation.

Answer:
-15.6 or -15 3/5
Step-by-step explanation:
Answer:
Step-by-step explanation:
the height is 80 m
hope that helps