Answer:
Symbols of inclusion are symbols used in mathematical expressions that group terms or factors together. They indicate that when we are simplifying expressions, we are to perform what's inside the symbols first. The three types of symbols of inclusion are parentheses, brackets, and braces.
Yes, -9 can be written as a fraction over 1, meaning it is a rational number

Answer:
The 4th option is the correct answer
Step-by-step explanation:
Hope this helps:)
Answer:
73.5
Step-by-step explanation:
A=bh
10.5*7
73.5
H=vt-16t²
vt-16t²=H
vt=16t²+H
v=(16t²+H)/t
v=16(t²/t)+H/t
v=16t+H/t
Answer: the answer would be: v=16t+H/t