You may write them separating the units and tens digits, and then use FOIL to add 4 easy tems. For example, let's compute :
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Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Answer:
B) 3.5cm
Step-by-step explanation:
1/80 = n/280
1 * 280 = n * 80
280 = 80n
3.5 = n or n = 3.5
like tacos........no tacos.....total
like pizza 57 13 70
no pizza 12 15 27
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total 69 28 97
relative frequency who both like tacos and pizzas = 57/70 = 0.81