Math 8B: Expressions with Irrational Numbers: Mastery Test

What is the simplified form of (3 x the square root of 7) - (5 x the square root of 7)? A. -2 x the square root of 7 B. 2 x the square root of 7 C. - the square root of 14 D. 15 x the square root of 7

-2 x the square root of 7

Estimate the value of (the square root of 2 x pi / the square root of 5 A. 0.33 B. 0.50 C. 0.67 D. 2.0

2.0

The product of 2 x the square root of 3 and 3 x the square root of 12 in simplified form is_______________

36

The simplified form of (5 x the square root of 2 x pi - 4 x the square root of 2 x pi / the square root of 2 is _______________ . Its estimated value is__________________.

first blank: pi second blank: 3.14

Which expression has a value closest to ? (Use as the value of pi.) A. 7pi / the square root of 10 B. the square root of 75 - the square root of 74 C. the square root of 37 - the square root of 26 D. 3 x the square root of 5 - the square root of 20 / the square root of 2

the square root of 37 - the square root of 26