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 Βιβλία Βιβλία 121 - 130 από 169 για miles an hour and the other at the rate of 40 miles an hour ; how far apart will.... miles an hour and the other at the rate of 40 miles an hour ; how far apart will they be at the end of 2 hours AN INTELLECTUAL ARITHMETIC, WITH AN INTRODUCTION TO WRITTEN ARITHMETIC. - Σελίδα 131
των A. WALTON, ELECTRA N. L. WALTON - 1869
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## Plane Trigonometry and Tables

George Albert Wentworth - 1897
...and move along straight tracks that form an angle of 30°, one train at the rate of 30 miles an hour, the other at the rate of 40 miles an hour. How far apart are the trains at the end of half an hour ? 19. In a parallelogram given the two diagonals 5 and 6,... ## Plane and Spherical Trigonometry

George Albert Wentworth - 1897 - 214 σελίδες
...and move along straight tracks that form an angle of 30°, one train at the rate of 30 miles an hour, the other at the rate of 40 miles an hour. How far apart are the trains at the end of half an hour? 19. In a parallelogram given the two diagonals 5 and 6,... ## Plane and Spherical Trigonometry, Surveying and Tables

George Albert Wentworth - 1897
...and move along straight tracks that form an angle of 30°, one train at the rate of 30 miles an hour, the other at the rate of 40 miles an hour. How far apart are the trains at the end of half an hour? 19. In a parallelogram given the two diagonals 5 and 6,... ## The Model Mental Arithmetic for Public and Private Schools

C. F. R. Bellows - 1898 - 136 σελίδες
...to walk in opposite directions. James walks at the rate of 4 miles an hour and John at the rate of 3 miles an hour; how far apart will they be at the end of 10 hours? How many miles will each then have walked? 16. Bought 9 tons of coal at 8 dollars a ton,... ## Elements of Trigonometry: Plane and Spherical

Andrew Wheeler Phillips, Wendell Melville Strong - 1898 - 138 σελίδες
...same time on straight tracks inclined to each other 21° 12'. If their average speeds are 40 and 50 miles an hour, how far apart will they be at the end of the first fifteen minutes? (36.) A ship, A, is seen from a light-house, B; to determine its distance... ## Elements of Trigonometry: Plane and Spherical

Andrew Wheeler Phillips, Wendell Melville Strong - 1898 - 138 σελίδες
...same time on straight tracks inclined to each other 21 o 12'. If their average speeds are 40 and 50 miles an hour, how far apart will they be at the end of the first fifteen minutes ? (36.) A ship, A, is seen from a light-house, B; to determine its distance... George Edward Atwood - 1899
...same point, and one goes south and the other west. The first goes twice as far as the second and goes 40 miles an hour. How far apart will they be at the end of 5 hours ? 8. What must be the inside dimensions of a cubical bin to hold as many bushels as one that... ## Lippincott's Practical Arithmetic: Embracing the Science and Practical ...

James Morgan Rawlins - 1899 - 437 σελίδες
...plain and travel, one due north at the rate of 3 miles an hour, the other due east at the rate of 5 miles an hour. How far apart will they be at the end of 10 hours? 57. Divide one millionth by eight ten-thousandths, and express the result in words. 58. Find... ## Graded Lessons in Arithmetic: Book IV

Wilbur Fisk Nichols - 1899
...same place, and travel in the same direction. One travels at the rate of 8 miles an hour, the other 11 miles an hour. How far apart will they be at the end of 20 hours ? 13. What is the cost of 9 cows, at \$25 each? 14. How much will 19 pencils cost, at 5x each... ## The Rand-McNally primary arithmetic

Edwin Crawford Hewett - 1899
...and walk in opposite directions, one at the rate of 3f miles an hour, and the other at the rate of 3| miles an hour. How far apart will they be at the end of 9 hours? 71. A man bought a piece of land at \$36 an acre, paying \$2,844 for it; he sold it at \$44 an...