A restaurant sells cheeseburgers for $5.00 and French fries for $3.00. An equation that represents the number of cheeseburgers and French fries that can

be bought for $20.00 is 5x + 3y = 20. Rearrange the equation to solve for the

number of French fries. *

x = (20 - 3y) / 5

Explanation:

Let

french fires be represented by = x

cheeseburgers be represented by = y

The equation is given as;

5x + 3y = 20.

Rearrange the equation to solve for the  number of French fries.

This means we are to make french fries (x) the subject of equation

5x + 3y = 20

5x = 20 - 3y

x = (20 - 3y) / 5

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante