Answer:
B. -3
Step-by-step explanation:
y = mx + b is slope intecept formula
m = slope
y = -3x + 7
-3 = m
Answer:
Sin is the function of an angle
it is the ratio of the length of the side that is opposite of that angle to the length of the longest side of the triangle
Answer:

Step-by-step explanation:
Based off of what we do know, if we can find length DB we can use the pythagorous theorem (I will be assigning the variable z)

First equation is for triangle ABD
Second is for BCD
And the last one is for ACD
Substitute
and 

As discovered before

Answer:
yes
Step-by-step explanation: