True or false

for a real number a, a + 0 = a.

for a real number a, a + (-a) = 1.

for a real numbers a and b, | a - b | = | b - a |.

for real numbers a, b, and c, a + (b ∙ c) = (a + b)(a + c).

for rational numbers a and b when b ≠ 0, is always a rational number.

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.  

the second means the process of making a product or service available for the consumer or business user that needs it.

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option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

the answer is a beach is the best place to be

i don't know

step-by-step explanation: