First Course in Algebra, Βιβλίο 1Macmillan, 1919 - 334 σελίδες |
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Σελίδα 1
... example . We know that the area of a rectangle may always be found by multiplying its length by its breadth . To express this rule by the use of letters we have only to let A stand for area , l for length , and b for breadth , and then ...
... example . We know that the area of a rectangle may always be found by multiplying its length by its breadth . To express this rule by the use of letters we have only to let A stand for area , l for length , and b for breadth , and then ...
Σελίδα 7
... EXAMPLE 1. If 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 ...
... EXAMPLE 1. If 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 ...
Σελίδα 8
Walter Burton Ford, Charles Ammerman. We shall now solve another example , but we shall condense the steps in this way from the beginning . 602 EXAMPLE 2. A person wishes to find the weight of a tennis ball . He puts three such balls in ...
Walter Burton Ford, Charles Ammerman. We shall now solve another example , but we shall condense the steps in this way from the beginning . 602 EXAMPLE 2. A person wishes to find the weight of a tennis ball . He puts three such balls in ...
Σελίδα 11
... , since the balance is not thereby disturbed . For example , to solve the equation , 5 , 3 we multiply both sides by 3 , thus obtaining x = 15 . Ans . ORAL EXERCISES Find the value of the letter in each I , §8 ] 11 LITERAL NUMBERS.
... , since the balance is not thereby disturbed . For example , to solve the equation , 5 , 3 we multiply both sides by 3 , thus obtaining x = 15 . Ans . ORAL EXERCISES Find the value of the letter in each I , §8 ] 11 LITERAL NUMBERS.
Σελίδα 18
... EXAMPLE 1. Find the value of 3.2 + 4-3-8 + 22 . SOLUTION . 3 · 2 + 4 · 3 — § + 22 = 6 + 12−3 + 4 = 19 . Ans . EXAMPLE 2. If x = 2 , y = 3 , z = 4 , find the value of yz 5 xy + 6 22- 3 . SOLUTION . Giving x , y , and z their values , we ...
... EXAMPLE 1. Find the value of 3.2 + 4-3-8 + 22 . SOLUTION . 3 · 2 + 4 · 3 — § + 22 = 6 + 12−3 + 4 = 19 . Ans . EXAMPLE 2. If x = 2 , y = 3 , z = 4 , find the value of yz 5 xy + 6 22- 3 . SOLUTION . Giving x , y , and z their values , we ...
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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