First Course in Algebra, Βιβλίο 1Macmillan, 1919 - 334 σελίδες |
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Αποτελέσματα 1 - 5 από τα 28.
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 34 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 34 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 ? 19. The sum of the angles of any triangle is 180 ° . In the triangle ABC the angle at A is three times as large C B 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 ? 19. The sum of the angles of any triangle is 180 ° . In the triangle ABC the angle at A is three times as large C B as the angle at B ...
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a²+2ab+b² 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