Hey there!
This can be written as

This is in form of

, it can be expanded as
=> (n-7)(n+7)=0
=> n -7 = 0 or n + 7 = 0
=> n = 7 or n = -7
So option 7 , -7 are correct.
Hope this is clear :)
Have a good day:)
Answer:
'∂' -- means a partial differential
'Δ' -- means a change in some variable.
'σ' --means 'sum' and 'deviation'.
The text says something about the world turning so maybe the equation has something to do with that? Maybe it is the equation for the earth's rotation. Sorry I can't find anything else, but I hope this helps a bit!
5x+30- 2x+9
3x+39 is the expression.
Answer:
the answer is D 8.8
Step-by-step explanation:
Answer:
5^6=15625
Step-by-step explanation: the little thing on the right of log to the power of the left of = is equal to the big numbers right of log