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Frazioni
Matematica
Middle School Math
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 1 *Questa è una scheda preparata.Utilizza il link nella parte superiore della pagina per ottenere una pagina stampabile.
 2 Sarah whined, "I don't understand all this technical stuff. The instructions say I should compress my files. How do I do that?" The instruction manual that came with the software had very clear instructions, but Sarah liked being contrary, so she never read instructions. The software will compress a file toone-ninthof its uncompressed size. If it is used to compress a file of276,741bytes, how many bytes will the new file take up?

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 3 Ranger Roger has counted about40% of the scrum trees in Vista Park today. He has this chore of counting the1,200scrum trees three times a year. If this is his second count this year, what fraction of the total number of scrum trees has he counted so far?
 4 In un branco di978zebre, circafive-sixthsl'un percento di tutti gli animali è stato ferito attraversando il fiume. Quanti sono stati feriti?

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 5 In examining a series of sediment layers in a canyon near the new BigTown geodesic dome, Aaron has been studying many layers of shale. He recently mapped all24of them. Ifmetàdegli strati hanno più di300milioni di anni, quanti strati sono più giovani di300milioni di anni?
 6 A new island has formed off the coast of Bay City, which is not unexpected since it is near a subduction zone. The island is currently about2km2. How many years would it take for the island to increase its area by one-half through volcanic activity if it expands at a rate ofone-eighthof a square kilometer each year?

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 7 A bus is making a trip from Bigtown to Megacity. The average round trip speed is always56MPH on this journey. The round trip distance is168miles. At Megacity the bus waits exactly22minutes and then returns to Bigtown. If the bus has completed2/3of this entire journey, how long has it been since it left Bigtown on the way to Megacity? Round your answer to the nearest minute.
 8 The kinetic energy (KE) of an object is one-half its mass times its velocity squared (1/2mv2). If a2 1/6-kg ball has a velocity of1/3m/s, what is its KE? (hint: don't forget to square the velocity)

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 9 One-fourthdi un kilogrammo di colla sperimentale è stata fatta dalla Superchem S.p.A. La colla erathree-tenthsacrylato X101,two-fifthscolla da legno, e il resto era costituito dalla loro normale colla da carta di tipo A. Quanti kilogrammi di colla da carta di tipo A sono stati usati in questa miscela?
 10 Three labs measured the iron content of an ore sample sent to them by Terra-Chem, Inc. The first lab reported19mg di ferro per cm3. The second lab reported a concentration of9/10quello e il terzo laboratorio ha riferito un valore di circa1 1/5of the value reported by lab 2. What was the iron concentration reported by lab 3? Round your answer to the nearest hundredth of a milligram.

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 11 La squadra di calcio americano dei Big Town ha segnato1/3dei suoi punti su passaggi,1/7on kicks,1/8su perdite palla e il resto in azioni di attacco. Se hanno segnato115punti durante la stagione, quanti punti hanno segnato in azioni di attacco?
 12 Jonathan plays shortstop for the Littleville baseball team. He is an excellent base runner. He is successful in stealing second base85% of the time and successful stealing third base69% of the time. He attempted to steal second21volte e terzo8times last year. What fraction of his attempts failed?

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Iscritti a edHelper - Crea un nuovo stampabile
La soluzione include anche le domande
La soluzione fornisce solo le risposte
Nessuna soluzione