Answer: 89 students remained at school that day.
Step-by-step explanation: If there are 104 students, and 15 are absent, you subtract, therefore, the answer is 89.
F(7) = 10 - 2^7
f(7) = 10 - 128
f(7) = -118
Answer:
∴ 2nd equation can be used to determine the length of other leg.
Which is known as 
Step-by-step explanation:
Given,
A Right Triangle has hypotenuse of
units and one leg has
units.
We know Pythagoras Formula for Right Triangle;

Here hypotenuse and one leg values in above equation and take
;



So 2nd equation can be used to determine the length of other leg.