Algebra for BeginnersMacmillan, 1895 - 188 σελίδες |
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Σελίδα 60
... each equal to y must be taken to make 15xy ? 19. If there are a numbers each equal to 2a , what is their sum ? 20. If there are 5 numbers each equal to x , what is their product ? 21 . 22 . cost ? If there are x 60 [ CHAP . ALGEBRA .
... each equal to y must be taken to make 15xy ? 19. If there are a numbers each equal to 2a , what is their sum ? 20. If there are 5 numbers each equal to x , what is their product ? 21 . 22 . cost ? If there are x 60 [ CHAP . ALGEBRA .
Σελίδα 61
... cost x dollars , what does each cost ? 24. How many books each worth two dollars can be bought for y dollars ? 25. If apples are sold at x for a dime , what will be the cost in cents of y apples ? 26. What is the price in cents of n ...
... cost x dollars , what does each cost ? 24. How many books each worth two dollars can be bought for y dollars ? 25. If apples are sold at x for a dime , what will be the cost in cents of y apples ? 26. What is the price in cents of n ...
Σελίδα 63
... cost of 6x nuts and 4x plums , when x plums cost a dime and plums are three times as expensive as nuts ? 28. If on an average there are x words in a line , and y lines in a page , how many pages will be required for a book which ...
... cost of 6x nuts and 4x plums , when x plums cost a dime and plums are three times as expensive as nuts ? 28. If on an average there are x words in a line , and y lines in a page , how many pages will be required for a book which ...
Σελίδα 68
... costs 7 dimes , x geese cost 7x dimes . And since each duck costs 3 dimes , 108 - x ducks cost 3 ( 108 - x ) dimes . Therefore the amount spent is 7x + 3 ( 108 - x ) dimes . But the question states that the amount is also $ 56.40 , that ...
... costs 7 dimes , x geese cost 7x dimes . And since each duck costs 3 dimes , 108 - x ducks cost 3 ( 108 - x ) dimes . Therefore the amount spent is 7x + 3 ( 108 - x ) dimes . But the question states that the amount is also $ 56.40 , that ...
Σελίδα 69
... cost as much over 24 cents as 16 of them cost under 60 how many oranges were bought ? cents ; 22. By buying eggs at 15 for a quarter and selling them at a dozen for 15 cents a man lost $ 1.50 ; find the number of eggs . 23. I bought a ...
... cost as much over 24 cents as 16 of them cost under 60 how many oranges were bought ? cents ; 22. By buying eggs at 15 for a quarter and selling them at a dozen for 15 cents a man lost $ 1.50 ; find the number of eggs . 23. I bought a ...
Συχνά εμφανιζόμενοι όροι και φράσεις
a²+b² acres algebraical sum Arithmetic arranged beginner cents CHAPTER coefficient Completing the square compound expressions convenient cube root descending powers difference digits dimes Divide division divisor Elementary Algebra equal examples see Elementary EXAMPLES XVII exceeds Find the highest Find the lowest find the number Find the product Find the square Find the sum find the value following expressions given expressions half-dollars Hence highest common factor lowest common denominator lowest common multiple lowest terms miles an hour miles per hour minute-hand Multiply negative numerator and denominator obtain quadratic equation quotient Reduce to lowest remainder removing brackets Resolve into factors result rule of signs side simple equation simultaneous equations Solve the equations square root Subtract Transposing trinomial unknown quantities walk whence write yards α α
Δημοφιλή αποσπάσματα
Σελίδα 91 - The product is a2+2a6-}-62; from which it appears, that the square of the sum of two quantities, is equal to the square of the first plus twice the product of the first by the second, plus the square of the second.
Σελίδα 107 - Conversely, the difference of the squares of any two quantities is equal to the product of the sum and the difference of the two quantities.
Σελίδα 89 - It is evident from the Rule of Signs that (1) no even power of any quantity can be negative; (2) any odd power of a quantity will have the same sign as the quantity itself. NOTE. It is especially worthy of notice that the square of every expression, whether positive or negative, is positive.
Σελίδα 54 - Transpose all the terms containing the unknown quantity to one side of the equation, and the "known quantities to the other.