pre-algebra

1.Which of the following numbers is an example of an integer?
A. -15
B. three-fifths
C. start root 7 end root
D. 0.252525 . . .
2.Which statement is false?
A. Every integer is a real number.
B. The number zero is a rational number.
C. Every irrational number is a real number.
D. Every real number is a rational number.
3.Which number is not the same type of number as the others in the list?
A. 5.85
B. 63.4
C. 8.52624 . . .
D. 27.5
4.How would you change this sentence to a true statement?

Some irrational numbers are also rational numbers.
A. All irrational numbers are also rational numbers.
B. Half of the irrational numbers are also rational numbers.
C. One-third of the irrational numbers are also rational numbers.
D. Irrational numbers cannot be classified as rational numbers.
How would you change this sentence to a true statement?

Every irrational number is an integer.
A. Every irrational number is a rational number.
B. Every irrational number is a real number.
C. Every irrational number is a whole number.
D. Every irrational number is a perfect square.

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  1. im really bad at this section so if anyone could help I would appreciate it

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  2. #1. well, integers have no decimal point
    #2. You may be "bad at this stuff" but you surely have seen the diagram of the sets and their inclusions. The reals include all of the others, right?
    #3. One of them does not terminate
    #4. irrationals and rationals are mutually exclusive sets
    #5. See #2

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    oobleck

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