The circumference covered by a radar signal can be represented by the expression 400π miles. What is the approximate length of t
he radius of this circumference?
A 20 miles
B 200 miles
C 127 miles
D 40 miles
2 answers:
Answer:
127 if it says to use 3.14, 200 if it does not ask to use 3.14
Step-by-step explanation:
C=
Substitute C for 400
400=2*r
400=2r
divided both sides by 2
Answer is 200
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Answer:
-12
Step-by-step explanation:
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6÷40.5= $6.75 per hour
8÷54= $6.75 per hour
y= 6.75x
Negative times negative = positive.
=0.63−(−9.85)
=0.63+9.85
=10.48
D) is the answer.
10 km in .5 hour. Since it is the same as 20 km in 1 hour. Multiplied by 2.
20 is greater than 15.
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