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 9
... 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 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 ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
added algebra Appendix arithmetic Axiom ball called cents check your answer coefficient common denominator common factor common multiple completing the square cube diameter divisor Draw the graph equal EXAMPLE EXERCISES Solve figure Find the L. C. M. Find the number 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 metic miles an hour minuend monomial multiply negative numbers numerator and denominator ORAL EXERCISES parentheses perfect square polynomial quadratic quadratic equation quotient radicand radius ratio represents result Similarly Simplify simultaneous equations SOLUTION Solve the equation square root subtract subtrahend SUPPLEMENTARY EXERCISES surd triangle trinomial unknown letter weight wheel write WRITTEN EXERCISES x²y² yards
Δημοφιλή αποσπάσματα
Σελίδα 17 - The square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
Σελίδα 235 - Then divide the first term of the remainder by the first term of the divisor...
Σελίδα 228 - A and B can do a piece of work in 10 days, A and C in 12 days, and В and C in 20 days.
Σελίδα 97 - 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 136 - Both terms of a fraction may be divided by the same number without changing the value of the fraction.
Σελίδα 232 - 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 232 - ... subtract the product from the dividend, and to the remainder annex the next period for the next dividend.
Σελίδα 98 - 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 69 - Any term may be transposed from one side of an equation to the other provided its sign be changed.
Σελίδα 235 - Arrange the terms of the polynomial with reference to the consecutive powers of some letter. Extract the square root of the first term, write the result as the first term of the root, and subtract its square from the given polynomial.