12. Cory is building a ramp for his school theatre production. It must climb a height
of 60 cm and have a slope angle of 10°.
a) Draw a diagram and label the given
information.
b) What distance will the ramp run along
the floor?
c) What will the distance along the
surface of the ramp be?
16.

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth

What number line represents the solution set for the inequality -1/2 greater than or equal to 4