Question

Solve x3 = 1 over 8.

1 over 2

±1 over 2

1 over 4

±1 over 4


Question 2(Multiple Choice Worth 4 points)

Identify square root of 3 as either rational or irrational, and approximate to the tenths place.


Rational: square root of 3 ≈ 1.7

Irrational: square root of 3 ≈ 1.7

Rational: square root of 3 ≈ 1.8

Irrational: square root of 3 ≈ 1.8


Question 3(Multiple Choice Worth 4 points)

Find negative square root of 16.


−4

4

±4

−8


Question 4(Multiple Choice Worth 4 points)

Solve x2 = –169.


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13

±13

−13


Question 5(Multiple Choice Worth 4 points)

A square rug covers 79 square feet of floor. What is the approximate length of one side of the rug? (Approximate to the nearest hundredth foot.)


8.86 feet

8.87 feet

8.88 feet

8.89 feet

Answer 1

x = 1/2 (1 over 2)

Explanation:

Proper way to type this in is x^3 = 1/8.

1/8 = 1 / (2)^3, so:

[x]^3 = [1/2]^3

Taking the cube root of both sides, we get x = 1/2.