Step-by-step explanation:
Diameter = 2r
= 7.7 = 2r
7.7/2 = r
3.85=r
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
Multiply both sides by 2.
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Multiply 6 and 2 to get 12.
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Subtract 3 from both sides.
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Subtract 3 from 12 to get 9.
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Hope it helps.
RainbowSalt2222
Answer:
and feet. 2. 4.81 mm. SOLUTION: The absolute error of a measurement is equal ... 1-10 Precision and Accuracy ... You are estimating the height of a person.
Step-by-step explanation:
Answer:
y=19
Step-by-step explanation:
2y + 2 = 180 - 120 -20
2y = 40 - 2
2y = 38
y=19
Percent of Change:
Difference/Original
(20-16)/16 = 4/16 = 1/4 = 25% increase