Amy notes that arcs ADB and AEB are semicircles and that ABDC is equilateral. Because ZBCD is a central angle, she can say that m BD = 60°. She uses these facts to determine MAD = IDE = MAE = 120°. Finally, she concludes AADE is equilateral because congruent arcs are
intercepted by congruent chords.
Why is ABDC is equilateral?
A Triangle BDC is equilateral because diameter AB is a perpendicular bisector of chord BD.
Св. Triangle BDC is equilateral because arcs BD and BE are two arcs with the same radius and center,
Triangle BDC is equilateral because the sum of the three angle measures in AADE is the same as the measure of a semicircle.
Triangle BDC is equilateral because the distance between all three vertices is equal to the radius of the circle.
DD

step-by-step explanation:

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation:

answer: 100

step-by-step explanation:

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !