Math ~CHECK MY ANSWERS~

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1) Which of these is a rational number?

a. Pi
b. square root 3 ******
c. square root 2
d. 1.3 (the # 3 has a line at the top)

2) Which of the following sets contains 3 irrational numbers?

A. square root 120, n, square root 3 ******
b. - square root 256, 1/9, 1/12
c. 3.14, -47, 100
D. n, square root 0.36, square root 121

5) Which is equivalent to the expression shown? 5^-3

a. -125
b. -15
c. 1/125 *****
d. 2

  • Math ~CHECK MY ANSWERS~ -

    1)
    1.3 = 13/10, so rational
    or
    1.333333...... = 1 1/3 = 4/3 which is rational

    2)agree

    3) agree

  • Math ~CHECK MY ANSWERS~ -

    The answer for #1 is A Pi = )

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