Answer:
This statement is "TRUE".
Step-by-step explanation:
Every elementary row operation is reversible. You can get the reverse answer by multiplying by a constant or by multiplying by its inverse. You can add one row to another row and subtract row 1 from row 2 to get it back.
Answer:
15$
Step-by-step explanation:
I'm guessing theres only one friend based on the singular "friend" but if there was more please tell me
so we can do 5-20 = 15 and that 15 is what her friend had.
4×4×4 So 3 days = 64. Thats for one person but there are 3 people. 64×3=192
Answer:
i think its #1.
Step-by-step explanation:
Im sorry if its wrong! I really don't do this stuff often...