Seventh racional numbers

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1. The base of a triangle is 14 inches and it's height is 2 inches . What is the area of the triangle? Answer: inch 2    2. The 2 parallel sides of a trapezoid measures 15 inches and 13 inches. If the height of the trapezoid is 9 inches . What is the area of the trapezoid? Answer: inch 2    3. The side of a square is 15 cm. What is the area of the square? Answer: cm 2    4. The 2 parallel sides of a trapezoid measures 13 cm and 7 cm. If the height of the trapezoid is 8 cm . What is the area of the trapezoid? Answer: cm 2    5. The base of a parallelogram is 15 cm and it's height is 13 cm . What is the area of the parallelogram? Answer: cm 2    6. The base of a parallelogram is 11 feet and it's height is 2 feet . What is the area of the parallelogram? Answer: foot 2    7. The 2 parallel sides of a trapezoid me...
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Eighth linear function

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The linear function is popular in economics. It is attractive because it is simple and easy to handle mathematically. It has many important applications. Linear functions are those whose graph is a straight line. A linear function has the following form y = f(x) = a + bx A linear function has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y. a is the constant term or the y intercept. It is the value of the dependent variable when x = 0. b is the coefficient of the independent variable. It is also known as the slope and gives the rate of change of the dependent variable. Graphing a linear function To graph a linear function: 1. Find 2 points which satisfy the equation 2. Plot them 3. Connect the points with a straight line Example: y = 25 + 5x let x = 1 then y = 25 + 5(1) = 30 let x = 3 then y = 25 + 5(3) = 40 A simple example of a linear equation A company has fixed costs of...
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