Unit Test — Unit test

Question 1

A radioactive element has a half-life of six days. What is the approximate decay rate of the element after the first day?

Revolt · Accepted Answer

10.9%

Question 2

What is the extraneous solution to the equation ?

Revolt · Accepted Answer

p = 4

Question 3

Which is an equivalent form of the expression 1800(1.2)–t?

Revolt · Accepted Answer

mc001-2.jpg

Question 4

Which expression is equivalent to ?

Revolt · Accepted Answer

1,728

Question 5

Which equation results from isolating a radical term and squaring both sides of the equation for the equation ?

Revolt · Accepted Answer

mc012-4.jpg

Question 6

What is the simplified value of the exponential expression ?

Revolt · Accepted Answer

2

Question 7

The equation shows the relationship between a planet’s orbital period, T, and the planet’s mean distance from the sun, A, in astronomical units, AU. If the orbital period of planet Y is twice the orbital period of planet X, by what factor is the mean distance increased?

Revolt · Accepted Answer

2 Superscript two-thirds

Question 8

The orbital period, P, of a planet and the planet’s distance from the sun, a, in astronomical units is related by the formula . If Saturn’s orbital period is 29.5 years, what is its distance from the sun?

Revolt · Accepted Answer

9.5 AU

Question 9

Which represents a side length of a square that has an area of 450 square inches?

Revolt · Accepted Answer

in.

Question 10

The speed that a tsunami can travel is modeled by the equation , where S is the speed in kilometers per hour and d is the average depth of the water in kilometers. What is the approximate depth of water for a tsunami traveling at 200 kilometers per hour?

Revolt · Accepted Answer

0.32 km

Unit Test — Unit test Answers

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