Answer:
see below for classification
concave: angles less than 180°
regular: sides and angles congruent
sum = 180°(n -2)
Step-by-step explanation:
A) The given shapes are classified and described in the attachment. (A polygon is a plane figure, so a "tripod" and a "dome" are not polygons.)
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B) A convex polygon has interior angles that measure less than 180°. A concave polygon has one or more reflex angles.
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C) A regular polygon has all angle measures congruent, and all side lengths congruent.
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D) The sum of interior angles can be calculated from the formula ...
angle sum = 180° · (n -2) . . . . where n is the number of sides
Answer:
The total cost is:$400
Step-by-step explanation:
Given


--- when the graph intersects the y-axis
-- the rate
Required
y when x = 20
First, we determine the equation of the plot using:

Substitute 10 for m

Next, solve for c.
Substitute 



So:


When x = 20



Answer: 3
Step-by-step explanation:
I just finished the test and this was the answer I put and it was right.
9x+6y=b
6y=b-9x
y=b/6 -9/6x
y=b/6-3x/2
y= -3x/2 +b/6
3x + 2y = 1
2y = 1 - 3x
y = 1/2 -3/2x
y = -3/2x + 1/2
b/6=1/2
b=3
Answer:
Touch
Step-by-step explanation:
You can feel the words "chilling" and "force".