Answer:
0.530 (the 0 is not required)
Step-by-step explanation:
this is because another combination would be .35 which is less than .53 so this what i think the answer is.
--hope this helped :))
Answer:
5
Step-by-step explanation:
Since you have y alone on one side of the equation......
Use substitution and plug in 1/2x-4 for y in the other equation.

Distribute

Combine like terms

Add 8 to both sides

Divide by 4
and 
Plug this value in for x

Simplify

Multiply everything by 8 and simplify

Divide.....

Your answers are:

Answer:
An atom of sodium has 11 proton, 11 electrons, and 12 neutrons.
Multiply the amount with the discount
95 x 0.15 = 14.25
Since it is discount, subtract $14.25 from the total amount: $95
95 - 14.25 = $80.75
B) $80.75 is your answer
hope this helps