Answer:
4 + √15
Step-by-step explanation:
Conjugate means flip the sign. For example, 1 + 1 ⇒ 1 - 1.
Answer:
the answer should be the second option idk for sure sorry if wrong.
Step-by-step explanation:
That can be expressed as 2(x+6).
Answer:
50-10=40
40/50=0.8
0.8=80%
10 dollars off of 50 dollars is 80%
Step-by-step explanation:
Answer: Metal A is 3 times faster than Metal B.
Step-by-step explanation:
Since we have given that
Time taken to oxidised metal A = 
Time taken to oxidised metal B =
seconds
So, ratio of metal A to metal B would be

So, Ratio of Metal A to Metal B is 1 : 3.
Hence, Metal A is 3 times faster than Metal B.