Exercises in Algebra

Εξώφυλλο
American Book Company, 1904 - 173 σελίδες
 

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Δημοφιλή αποσπάσματα

Σελίδα 141 - There are four numbers, the first three of which are in GP, and the last three are in AP ; the sum of the first and last is 14, and of the means is 12. Find the numbers.
Σελίδα 133 - The pressure of wind on a plane surface varies jointly as the area of the surface, and the square of the wind's velocity. The pressure on a square foot is 1 Ib.
Σελίδα 141 - ... pay $2.50 extra, in consequence. Of how many did the party consist? 121. 1. If the number of visitors to a fair varies as the square of the number of degrees above 42° F., and if there are 1152 visitors when the temperature is 68°, how many visitors will there be if the temperature is 55° ? 2. Insert between 6 and 16 two numbers such that the first three numbers may be in arithmetical progression, and the last three in geometrical progression. 3. If è of the sum of the squares of the roots...
Σελίδα 171 - X, x + y represent the numbers. 17. Arithmetical means are inserted between 5 and 23, so that the sum of the first two is to the sum of the last two as 2 is to 5. How many means are inserted ? 18. -Find three numbers of an arithmetical series whose sum shall be 21, and the sum of the first and second shall be f of the sum of the second and third.
Σελίδα 166 - Ex. 2. Out of 7 consonants and 4 vowels, how many words can be made each containing 3 consonants and 2 vowels ? The number of ways of choosing the three consonants is...
Σελίδα 27 - In a company there are 39 persons. The number of children is twice the number of grown people. How many are there of each ? 34.
Σελίδα 69 - If 1 is added to both numerator and denominator of a certain fraction, the resulting fraction...
Σελίδα 133 - B = 5 and (7=7. 6. If the square of X varies as the cube of Y, and X= 3 when F =4, find the equation between Xand F 7.

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