8+5=13
13*2=26
26-7=19
19+1=20
20/2=10
10-2=8
100+5=105
105*2=210
210-7=203
203+1=204
204/2=102
102-2=100
4256+5=4261
4261*2=8522
8522-7=8515
8515+1=8516
8516/2=4258
4258-2=4256
Yes, I tested it 3 times with 3 different numbers.
Answer:
9.41666667 feet
Step-by-step explanation:
(y-k)²/a² + (x-h)²/b² = 1
Vertices being : A(0,1) & B(0, - 9), means that h=0
Let's calculate k: Af₁ + Af₂ = |2+8| = 2a = 10 → a=5 (f₁ and f₂ = focii)
1) a = 10 (WRONG) since a =5
2) h=3 (WRONG) since h =0
3) k =0 (WRONG) since k =5
4) b = 4 RIGHT; PROOF:
we know that : c² = a² - b²
c= 3 & a = 5 then → 3² = 5² - b²
9 = 25 - b²
b² = 25-9 = 16 and b = 4
X(x-20)=12000
x^2 - 20x = 12000
x^2 - 20x - 12000 = 0
(x - 120)(x + 100) = 0
x = -100, 120
so the width is 120 ft
Answer:
A regular polygon has these characteristics:
- 3 or more sides
- Closed shape
A polygon can not have one or two sides because that would be a line. It must have more than three sides, or else it is not a polygon.
A polygon is always a closed shape - it can not be an open shape or else it would not be a polygon, it would be considered an outline.
Hope this helps you!
