Essentials of Algebra for Secondary SchoolsD.C. Heath & Company, 1897 - 411 σελίδες |
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Σελίδα 58
... minutes , respectively . The pipe A was opened for a certain number of minutes ; it was then closed , and the pipe B opened ; and in this way the tank was filled in 13 minutes . How many minutes was each pipe open ? 42. A grocer has tea ...
... minutes , respectively . The pipe A was opened for a certain number of minutes ; it was then closed , and the pipe B opened ; and in this way the tank was filled in 13 minutes . How many minutes was each pipe open ? 42. A grocer has tea ...
Σελίδα 129
... minutes , by the second alone in 4 minutes , and by the third alone in 4 minutes . In what time will it be filled if all the taps be opened ? 18. The first digit of a number is 4 less than the second ; and if the number be divided by ...
... minutes , by the second alone in 4 minutes , and by the third alone in 4 minutes . In what time will it be filled if all the taps be opened ? 18. The first digit of a number is 4 less than the second ; and if the number be divided by ...
Σελίδα 131
... minutes after A , and travel towards each other . A travels at the rate of 6 miles an hour , and B at the rate of 5 miles an hour . How far will each have travelled when they meet ? 36. A grocer buys eggs at the rate of 4 for 7 cents ...
... minutes after A , and travel towards each other . A travels at the rate of 6 miles an hour , and B at the rate of 5 miles an hour . How far will each have travelled when they meet ? 36. A grocer buys eggs at the rate of 4 for 7 cents ...
Σελίδα 132
... minute - spaces passed over by the hour - hand . But the minute - hand moves 12 times as fast as the hour - hand . Whence , x = 12 ( x — 45 ) . - * = 12 x – 540 . - 11 x == - 540 . x = 4911 . Then the required time is 49 minutes after 3 ...
... minute - spaces passed over by the hour - hand . But the minute - hand moves 12 times as fast as the hour - hand . Whence , x = 12 ( x — 45 ) . - * = 12 x – 540 . - 11 x == - 540 . x = 4911 . Then the required time is 49 minutes after 3 ...
Σελίδα 133
... minutes , and by the third alone in 4 hours . In what time will it be emptied if all the taps be opened ? 49. A and ... minute in advance of the minute - hand ? 54. Gold is 194 times as heavy as water , and silver 10 times . A mixed mass ...
... minutes , and by the third alone in 4 hours . In what time will it be emptied if all the taps be opened ? 49. A and ... minute in advance of the minute - hand ? 54. Gold is 194 times as heavy as water , and silver 10 times . A mixed mass ...
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a²b a²b² a²x² a³b ab² ab³ Algebra arithmetic means arithmetic progression ax² binomial cent change the sign coefficient cologarithm common factor cube root decimal degree denominator digits dimes Divide dividend divisor equal EXAMPLES exponent Extracting the square Find the H. C. F. Find the number Find the value following rule geometric geometric progression Hence highest common factor last term less logarithm m²n mantissa miles an hour monomial Multiplying negative number Note number of dollars number of terms partial fractions polynomial positive integer positive number quadratic equation quotient radical sign ratio remainder result second term Solve the equation Solve the following square root Subtracting Transposing trial-divisor unknown quantities Whence x²y xy² xy³
Δημοφιλή αποσπάσματα
Σελίδα 276 - In any proportion,, the terms are in proportion by Composition ; that is, the sum of the first two terms is to the first term as the sum of the last two terms is to the third term.
Σελίδα 55 - ... the square of the second. In the second case, we have (a — 6)2 = a2-— 2 ab + b2. (2) That is, the square of the difference of two quantities is equal to the square of the first, minus twice the product of the two, plus the square of the second.
Σελίδα 128 - At what time between 3 and 4 o'clock are the hands of a watch opposite to each other ? Let x = the number of minute-spaces passed over by the minutehand from 3 o'clock to the required time.
Σελίδα 37 - Divide the first term of the dividend by the first term of the divisor, and write the result as the first term of the quotient.
Σελίδα 277 - In a series of equal ratios, any antecedent is to its consequent, as the sum of all the antecedents is to the sum of all the consequents. Let a: 6 = c: d = e :/. Then, by Art.
Σελίδα 133 - A person has a hours at his disposal. How far may he ride in a coach which travels b miles an hour, so as to return home in time, walking back at the rate of с miles an hour ? 43.
Σελίδα 18 - From §§36 and 37, we have the following rule: To subtract one number from another, change the sign of the subtrahend, and add the result to the minuend.
Σελίδα 275 - If the product of two quantities is equal to the product of two others, one pair may be made the extremes, and the other pair the means, of a proportion. Let ad = ос.
Σελίδα 136 - If necessary, multiply the given equations by such numbers as will make the coefficients of one of the unknown quantities in the resulting equations of equal absolute value.
Σελίδα 45 - A term may be transposed from one member of an equation to the other by changing its sign.