Answer:
- Why was the parabola feeling down today?
- Because of negative 'a'
<em>y = ax^2 + bx + c is the formula of parabola</em>
<em>When a > 0, parabola opens up</em>
<em>When a < 0, parabola opens down</em>
Answer:
Step-by-step explanation:
check the picture below.
so, we know the dimensions of the pool, is a 20x10, so its area is simply 200 ft², and we know the walkway is 216 ft², so the whole thing, including pool and walkway is really 200 + 216 ft².
now, as you see in the picture, the dimensions for the combined area is 20+2x and 10+2x, since the walkway is "x" long, therefore,
notice, it cannot be -18, since is a positive length unit.
From the segment addition postulate with respect to line segment DG, we have that; x = 7
<h3>How to use the segment addition postulate?</h3>
The segment addition postulate states that if "B" is between "A" and "C", then the length of segment "A" "B" + the length of segment "B" "C" equals the length of segment "A" "C."
AB + BC = AC
Applying the segment addition postulate to line segment DG, gives us;
DO + OG = DG
Thus;
4x - 3 + 2x + 21 = 60
6x + 18 = 60
6x = 60 - 18
6x = 42
x = 42/6
x = 7
Read more about Segment Addition Postulate at; brainly.com/question/8796840
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