A and d seem correct to me.
b and c are definitely wrong.
Answer:
Why is 3 an integer?
They are the numbers you usually count and they will continue on into infinity. Whole numbers are all natural numbers including 0 e.g. 0, 1, 2, 3, 4… Integers include all whole numbers and their negative counterpart e.g. … -4, -3, -2, -1, 0,1, 2, 3, 4
Answer:
D) multiply 3y by ž in the first equation and subtract the second equation
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Can you upload the document please so I can try to assist you