Answer:
A
Step-by-step explanation:
the answer is a :
6 4/5+√9/4
Answer: 8.2×10-3^1, I think the second part of the answer is 4.4×10^1 (44)
I think this is right but I'm not a mathematician.
Step-by-step explanation:
The first problem is 7.9×10^1 (79)
Second problem 4.6×10^1 (46)
Third problem 3.5×10^1 (35)
It is a ratio so basically their is no real anwser for it
Answer: A
Step-by-step explanation:
8 - 15 means subtract the positive number 15 from 8.
8 - 15 = 8 + (-15) = -7
8 - (-15) means subtract the negative number -15 from 8.
Subtracting a negative number is the same as adding a positive number.
8 - (-15) = 8 + 15 = 23
8 - 15 = -7, and 8 - (-15) = 23. The expressions mean different operations and have different answers.
