<span>A midpoint divides a line or a segment into two equal parts. If D is the midpoint of the segment AC and C is the midpoint of segment DB, what is the length of the segment AB, if AC = 3 cm.</span>

If D is the midpoint of AC, then AD=DC

If C is the midpoint of DB, then DC=CB

If AC=3cm. then then DC-3/2=1.5

If DC=1.5 then CB is 1.5 also

AB=AC+CB

AB=3+1.5

AB=4.5

5 0

2 years ago

Can someone help please.

snow_lady [41]

<span>By the Pythagorean theorem
AB = </span>√(12²+5²) = √169 = 13 units

$\frac{AD}{AB} = \frac{BD}{BC} \ \to \ BC= \frac{AB*BD}{AD}= \frac{13*12}{5}= 31.2 \ units$

8 0

2 years ago

F(x)=e^x and g(x) = x+6. What are the domain and range of (gºf)(x)?

Annette [7]

Domain: all real numbers
range: y>6

3 0

2 years ago