kayciemarie9486
07.11.2020 •
Mathematics
Using the benchmarks of 0, One-half, and 1, is 12.5 a reasonable estimate for the sum of 9.3 + Two and four-fifths?
don't say anything stupid pls (i will report u)
answer choices
No, 12.5 is not a reasonable estimate, because 9.3 rounds to 9 and Two and four-fifths rounds to Two and one-half. The estimate should be 11.5.
No, 12.5 is not a reasonable estimate, because 9.3 rounds to 9 and Two and four-fifths rounds to 3. The estimate should be 13.
Yes, 12.5 is a reasonable estimate, because 9.3 rounds to 9.5 and Two and four-fifths rounds to 3. The estimate should be 12.5.
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Ответ:
(24/5)π = (48/360) A
(24/5)π = (15/2) A
(24/5)π × (2/15) = A
(8/5)π × (2/5) = A
(16/25)π = A