Step-by-step explanation:
It's a straight line so plug in two numbers and connect the points.
And the result is everything under the line. Expect the line because its only < instead of <=
To check your answer use Mathaway or something Desmos
Hey diddle diddle the medians in the middle. you add and subtract for the mean. the mode is the one that appears the most, and the range is the difference between.
The answer is 40 because 5a equals 5 times 12 which is 60, and 3b plus c equals 3 times 4 plus 8 which is 20 so 60 minus 20 is 40.
Part (a):
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6 : 9 = x : 72
By using cross multiplication
∴ 9 x = 6 * 72
∴ 9 x = 432
∴ x = 432/9 = 48============================================
Part (b):
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8 : 3 = 40 : x
By using cross multiplication
∴ 8x = 3 * 40
∴ 8x = 120
∴ x = 120/8 = 15============================================
Part (c):
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x : 55 = 3 : 5
By using cross multiplication
∴ 5 x = 3 * 55
∴ 5 x = 165
∴ x = 165/5 = 33============================================
Part (d):
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33 : x = 11 : 5
By using cross multiplication
∴ 11 x = 5 * 33
∴ 11 x = 165
∴ x = 165/11= 15============================================