Answer:
There is no drawing or pic. You might want to re-post it. ^^
Step-by-step explanation:
Answer:

Step-by-step explanation:
You can use Summation Notation as a pattern to evaluating "20 + 30 + 40 + 50 + 60 + 70 + 80":

I am joyous to assist you anytime.
The sum of the measures of the angles of a triangle is
180 degrees.
Let x = our unknown angle
A right angle has measure 90 degrees.
We have x + 90 + 40 = 180 so
x + 130 = 180 and x = 50
Answer:
-4
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-7-(-19))/(-2-1)
m=(-7+19)/-3
m=12/-3
m=-4
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