Practice Test Answers

What is the area of triangle DEF ?

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

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

What is the best approximation of the value of A ?

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?

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.

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

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