Use Pythagorean Theorem:
a² + b² = c²
"a" is one side of the right triangle.
Its length is: radius of larger circle minus radius of smaller circle: (11 - 3 = 8)
The distance between the center of the circles creates the hypotenuse (17)
8² + b² = 17²
b² = 225
b = 15
Answer: the length of the common external tangent is 15.
Answer:
6) 10,4,-2,-8
7) 5,10,15,20
8) 1,7,13,18
Step-by-step explanation:
that is the answr
Answer:
wuth what i cant see any picture
Step-by-step explanation:
Answer:
Step-by-step explanation:
12 customers = 9 mintues
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Divide by 3 through
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12 ÷ 3 customers = 9 ÷ 3 minutes
4 customers = 3 minutes
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Answer: She can ring up 4 customers in 3 minutes
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