Math Mod Unit 9 Practice Test Questions
And 100% Solved Solutions.
A force of 550 Newtons will compress a spring of 11 meters. What is the spring constant of the spring? -
Answer 50 N/m
If y varies jointly as x and z , and y=20 when x=15 and z=6 , find y when x=4 and z=5. - Answer 4 4/9
The ratio of the length of the leg ____ an acute angle to the length of the hypotenuse is called the sine of
a right triangle. - Answer opposite
Joint variation is a relationship where one variable varies directly as the _____ of two other variables. -
Answer product
The ratio of the length of the _____ opposite an acute angle to the length of the leg adjacent to the
acute angle is called the tangent of a right triangle. - Answer leg
Wind resistance varies jointly as an object's surface area and velocity. If an object traveling 55 miles per
hour with a surface area of 24 square feet experiences a wind resistance of 330 Newtons, how fast must
a car with 48 square feet of surface area travel in order to experience a wind resistance of 252 Newtons?
- Answer 21 miles per hour
What force is required to compress a spring with spring constant k=750 N/m 0.3 meters? - Answer -225
N
A weather balloon with a volume of 5 liters at a pressure of 1.25 will have what volume when the
pressure is 0.75? - Answer 8 1/3 L
Complementary angles are two angles the _____ of whose measures are 90 degrees. - Answer sum
Inverse variation is a relationship where one variable gets ______ as the other gets larger and the
product of the two variables is a constant. - Answer smaller
And 100% Solved Solutions.
A force of 550 Newtons will compress a spring of 11 meters. What is the spring constant of the spring? -
Answer 50 N/m
If y varies jointly as x and z , and y=20 when x=15 and z=6 , find y when x=4 and z=5. - Answer 4 4/9
The ratio of the length of the leg ____ an acute angle to the length of the hypotenuse is called the sine of
a right triangle. - Answer opposite
Joint variation is a relationship where one variable varies directly as the _____ of two other variables. -
Answer product
The ratio of the length of the _____ opposite an acute angle to the length of the leg adjacent to the
acute angle is called the tangent of a right triangle. - Answer leg
Wind resistance varies jointly as an object's surface area and velocity. If an object traveling 55 miles per
hour with a surface area of 24 square feet experiences a wind resistance of 330 Newtons, how fast must
a car with 48 square feet of surface area travel in order to experience a wind resistance of 252 Newtons?
- Answer 21 miles per hour
What force is required to compress a spring with spring constant k=750 N/m 0.3 meters? - Answer -225
N
A weather balloon with a volume of 5 liters at a pressure of 1.25 will have what volume when the
pressure is 0.75? - Answer 8 1/3 L
Complementary angles are two angles the _____ of whose measures are 90 degrees. - Answer sum
Inverse variation is a relationship where one variable gets ______ as the other gets larger and the
product of the two variables is a constant. - Answer smaller
