Answer:

Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Mass of electron:9.109 times 10^-31 kg
mass of proton: 1.673 times 10-27
speed of light=3.0 times 10^8
avogadro's number 6.02 times 10^32
planck's constant: 6.63 times 10^-34
just google chem constants sheet
Step-by-step explanation:
f(5) = 2(5) = 10
hope this helps
Answer:
Multiply the second equation by 2
Step-by-step explanation:
Given


Required
Get matching coefficient for elimination


The coefficient of x in both expressions are factors.
So, we can multiply the second equation by 2 to get the coefficient of x in the first.
i.e.


So, the system becomes:


<em>Now, x can be eliminated</em>
It would be $84.15 for the tablet and $12.75 for the memory card, so $14.85 off on the tablet and $2.25 off on the card. I hope this helps!