Now we solve it using a special method: Multiply across the known corners, then divido by the third number And we get this: using the above method 7 (42 x 10)/20 420 / 20 21 N:42 - 10:20 20N = 42 x 10 20N- 420 N. 420/20 N. 21 therefore 21:42 - 10:20 is proportion So you should draw the head 21 long. Therefore 21:42 = 10:20 is proportion because the product of 21 and 20 is the same as the product of 42 and 10 which is 420. PEXERCISE 3.4: Find the missing number in the following 1. 4:6 6:N 2. 4:N = 10:15 3. N:4 - 25:20
Now we solve it using a special method: Multiply across the known corners, then divido by the third number And we get this: using the above method 7 (42 x 10)/20 420 / 20 21 N:42 - 10:20 20N = 42 x 10 20N- 420 N. 420/20 N. 21 therefore 21:42 - 10:20 is proportion So you should draw the head 21 long. Therefore 21:42 = 10:20 is proportion because the product of 21 and 20 is the same as the product of 42 and 10 which is 420. PEXERCISE 3.4: Find the missing number in the following 1. 4:6 6:N 2. 4:N = 10:15 3. N:4 - 25:20
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
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