U9

Question 1

a description of a real-world system using mathematical language and concepts

Answer 1

mathematical model

Question 2

the amount of time it takes a decaying substance to decrease by half

Answer 2

half-life

Question 3

two angles, the sum of whose measures is 90 degrees

Answer 3

complementary

Question 4

in a right triangle, the ratio of the length of the leg adjacent to an acute angle to the length of the hypotenuse

Answer 4

cosine

Question 5

in a right triangle, the ratio of the length of the leg opposite an acute angle to the length of the hypotenuse

Answer 5

sine

Question 6

in a right triangle, the ratio of the length of the leg opposite an acute angle to the length of the leg adjacent to the acute angle

Answer 6

tangent

Question 7

the height or depth of a wave from the center line

Answer 7

amplitude

Question 8

the length of time between two pulses of a wave

Answer 8

period

Question 9

a relationship where one variable gets smaller as the other gets larger and the product of the two variables is a constant

Answer 9

inverse variation

Question 10

a relationship where one variable varies directly as the product of two other variables

Answer 10

joint variation