Practice Test

Question 1

What is the area of triangle DEF ?

Revolt · Accepted Answer

C: 2 square root of 14  square units

Question 2

Which equation correctly applies the law of cosines to solve for an unknown angle measure?

Revolt · Accepted Answer

D: 8 squared is equal to 7 squared plus 11 squared minus 2 7 11 cosine cap p

Question 3

Which equation is correct and can be used to solve for the value of z ?

Revolt · Accepted Answer

B: sine of open paren 51 degrees close paren over 2 point 6 is equal to sine of open paren 76 degrees close paren over z

Question 4

What is the best approximation of the value of A ?

Revolt · Accepted Answer

B: 2 point 4 centimeters

Question 5

The height, h , in feet of a ball suspended from a spring as a function of time, t , in seconds can be modeled by the equation h is equal to A sine open paren b times open paren t minus h close paren close paren plus k What is the height of the ball at its equilibrium?

Revolt · Accepted Answer

A: k  feet

Question 6

The depth of the water at the end of a pier changes periodically along with the movement of tides. On a particular day, low tides occur at 12:00 a.m. and 3:30 p.m., with a depth of 3 point 2 5 meters, while high tides occur at 7:45 a.m. and 11:15 p.m., with a depth of 8 point 7 5 meters. Which of the following equations models d , the depth of the water in meters, as a function of time, t , in hours? Let t is equal to 0 be 12:00 a.m.

Revolt · Accepted Answer

C: d is equal to negative 2 point 7 5 cosine open paren 4 pi over 31 t close paren plus 6

Question 7

Heron’s formula: Area is equal to square root of s open paren s minus A close paren open paren s minus b close paren open paren s minus c close paren end root

Revolt · Accepted Answer

C: 33  square units

Question 8

To the nearest whole number, what is the value of m ?

Revolt · Accepted Answer

A: 14

Practice Test Answers

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