None of the "following" expressions!
Only like terms can be subtracted or added in algebraic expressions.
-8
A quotient is the result of dividing one number by another number. It represents how many times one number can be divided evenly into another number. An addend is one of the numbers being added together in an addition problem. It is a term used to describe a number that is added to another number to get a sum.
The sum of multiplication expressions is the answer that you'd have, if you added together more than one multiplication expression. For example: 3 x 4 + 5 x 2 = A <--- A = the answer after you do/evaluate the expressions 12 + 10 = A 22 = A 22 is the sum of the above multiplication expressions (i.e. 3 x 4 plus 5 x 2)
Another even number. 2x represents any even number (divisible by 2) 2y represents any other even number (again, divisible by 2) 2x + 2y = 2(x+y) It does not matter what x+y is, because it is multiplied by 2 so 2(x+y) is divisible by 2, therefore even.
The number is 4.09
The phrase used is "or equivalent". This is usually added after the manufacturers name and catalog number.
Terms of an Expression
Only like terms can be subtracted or added in algebraic expressions.
because each star represents a state. when a star is added that means a state is added
N represents the number of neutrons in an atom, A represents the atom's mass number and Z is the atoms proton number. This makes sense because it shows that the mass number of an atom is the number of protons added to the number of neutrons in the nucleus.
The relevant property is the closure of the set of rational numbers under the operation of addition.
-8
A quotient is the result of dividing one number by another number. It represents how many times one number can be divided evenly into another number. An addend is one of the numbers being added together in an addition problem. It is a term used to describe a number that is added to another number to get a sum.
XI represents 11 (eleven). The X = 10, and the I (I =1) being on the right is added to X making it 11.
9 x represents a number so in this equation it basically means what number is added to 9 to make 18 to work it out you do 18-9=9
Algebraic expressions are the written relations of or between variables. For example, x2, 1/x, and x + y + z are all algebraic expressions. Algebraic equations are simply algebraic expressions that equate to something. For example, x2 = 4, 1/x = y, and x + y + z = 42 are all algebraic equations. In general, one differentiates algebraic expressions from exponential, trigonometric, hyperbolic, and logarithmic expressions by requiring algebraic expressions to be confined to polynomial expressions. I've added a link regarding polynomials below.