First Course in Algebra, Βιβλίο 1Macmillan, 1919 - 334 σελίδες |
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Αποτελέσματα 1 - 5 από τα 27.
Σελίδα 7
... twice a certain number is increased by 5 , the result is 29. What is the number ? SOLUTION . Let x stand for the number sought . Then , from what the problem says , we must have 2x + 5 = 29 . This statement is called an equation , since ...
... twice a certain number is increased by 5 , the result is 29. What is the number ? SOLUTION . Let x stand for the number sought . Then , from what the problem says , we must have 2x + 5 = 29 . This statement is called an equation , since ...
Σελίδα 11
... twice theirs . Our score was 11. What was theirs ? 19. In paying for 31 yards of cloth a lady gave the clerk a $ 2 bill and received 57 cents back in change . How much was the material a yard ? 20. A man said , " For $ 2500 you can have ...
... twice theirs . Our score was 11. What was theirs ? 19. In paying for 31 yards of cloth a lady gave the clerk a $ 2 bill and received 57 cents back in change . How much was the material a yard ? 20. A man said , " For $ 2500 you can have ...
Σελίδα 13
... twice a certain number is divided by 3 , the result is 12. What is the number ? ( Compare with Ex . 10. ) 20. By what number must 71⁄2 be multiplied to give 425 ? 21. The diameter of an ear of corn is about one fourth of its length ...
... twice a certain number is divided by 3 , the result is 12. What is the number ? ( Compare with Ex . 10. ) 20. By what number must 71⁄2 be multiplied to give 425 ? 21. The diameter of an ear of corn is about one fourth of its length ...
Σελίδα 16
... twice as much space as the steam . How many cubic feet did each occupy ? [ HINT . After finding x , the space occupied by the steam , it is necessary to multiply it by 2 to find the space occupied by the water . ] 16. In a fire , B lost ...
... twice as much space as the steam . How many cubic feet did each occupy ? [ HINT . After finding x , the space occupied by the steam , it is necessary to multiply it by 2 to find the space occupied by the water . ] 16. In a fire , B lost ...
Σελίδα 17
... twice as much as the ball , and the glove three times as much as the bat , what was the cost of each ? C B 19. The sum of the angles of any triangle is 180 ° . In the triangle ABC the angle at A is three times as large as the angle at B ...
... twice as much as the ball , and the glove three times as much as the bat , what was the cost of each ? C B 19. The sum of the angles of any triangle is 180 ° . In the triangle ABC the angle at A is three times as large as the angle at B ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ab+b² added algebra Appendix arithmetic Axiom called cents CHAPTER check your answer circle coefficient common denominator common factor completing the square cube diameter divisor Draw the graph equal EXAMPLE EXERCISES Solve figure Find the H. C. F. Find the numbers Find the value following equations following exercises following expressions fraction further exercises given equation gives highest common factor HINT illustrated inches length lowest common means miles an hour minuend monomial multiply negative numbers numerator and denominator ORAL EXERCISES parentheses perfect square polynomial quadratic quadratic equation quotient radical radicand radius ratio represents result Similarly Simplify simultaneous equations SOLUTION Solve the equation square root subtract subtrahend SUPPLEMENTARY EXERCISES surd Transposing triangle trinomial weight wheel write WRITTEN EXERCISES x²y² yards
Δημοφιλή αποσπάσματα
Σελίδα 241 - Then divide the first term of the remainder by the first term of the divisor...
Σελίδα 101 - Prove that the square of the sum of any two numbers equals the square of the first number, plus twice the product of the two numbers, plus the square of the second number.
Σελίδα 238 - Find the greatest square in the left-hand period and write its root for the first figure of the required root. Square this root, subtract the result from the left-hand period, and to the remainder annex the next period for a dividend.
Σελίδα 138 - Separate each number into its prime factors. Find the product of these factors, taking each factor the greatest number of times it occurs in any one of the given numbers.
Σελίδα 140 - Both terms of a fraction may be divided by the same number without changing the value of the fraction.
Σελίδα 238 - ... subtract the product from the dividend, and to the remainder annex the next period for the next dividend.
Σελίδα 102 - That is, the square of the difference of two numbers is equal to the square of the first number, minus twice the product of the two numbers, plus the square of the second number.
Σελίδα 73 - Any term may be transposed from one side of an equation to the other provided its sign be changed.
Σελίδα 143 - A fraction is reduced to its lowest terms when its numerator and denominator have no common factor except 1.
Σελίδα 227 - If 1 is added to the numerator of a certain fraction, the value of the fraction becomes f ; if 2 is added to the denominator, the value of the fraction becomes £. What is the fraction ? SUGGESTION.