Answer:
x=15
Step-by-step explanation:

~
Answer:
A. 13 1/5
Step-by-step explanation:
=10 3/5 + 2 3/5
=53/5 + 13/5
=66/5
=13 1/5
Answer:
-4
Step-by-step explanation:
Answer:
30 and 60
Step-by-step explanation:
Complementary angles add up to 90o
x+2x=90
3x=90
x=30
2*30=60
30+60=90
Let x represent the horse age
Let y represent the human age
Since the horse age and human age vary directly, we have the relation

Introducing an equality sign, we

Where K is a proportionality constant, evaluated as

Since a 5-year-old horse is equivalent to 15-year old human,
x = 5
y = 15
we have

Thus,

Thus, for a horse who has lived 16 years
x = 16