Answer: First option 3/10
Solution
The scale factor of dilation of triangle DEF is the ratio between the corresponding sides of the triangle D'E'F' and the triangle DEF:
Scale factor: f=D'F'/DF=D'E'/DE=E'F'/EF (1)
We can find the ratio D'F'/DF using the similar triangles OD'F' and ODF, because their sides must be proportionals:
D'F'/DF=OF'/OF=OD'/OD (2)
We know according with the figure:
OF'=3 and F'F=7, then:
OF=OF'+F'F→OF=3+7→OF=10
Then replacing in (2):
(2) D'F'/DF=3/10=OD'/OD
And replacing in (1):
(1) f=3/10=D'E'/DE=E'F'/EF
Answer: The scale factor of dilation of triangle DEF is 3/10
Answer:
1. x = 10 - y/2 2. x = 2 + 5y/6
Step-by-step explanation:
The question is asking for the circumference
The equation for circumference is C=2(Pi)r<span>
</span>to find the radius, half the diameter 4/2=2
the equation is now C=2(Pi)2<span>
simplify the equation...
C=4(Pi)
Pi is </span>3.1415926535897932384626433832795
Now multiply 3.1415926535897932384626433832795 times 4 = 12.566370614359172953850573533118
Round to nearest tenth...
12.6 mi
Answer:
13.5 feet or 27/2
Step-by-step explanation:
4.5 x 3 = 13.5
Answer:
4
Step-by-step explanation:
the 20 meets up with the 4
so 4