Answer:15
Step-by-step explanation:
Step-by-step explanation:
A pyramid is made when 4 triangle meet on square then mate on each together .
Answer: C
Step-by-step explanation:
-100-_= 45
-100+145= 45
Negative plus negative equals a positive sign
Last one 1/4x
because the opposite of 1/4 is 4/1
There's a website called desmos.com. That website can tell you the answer