11) А= 9 cm 4 cm What is the area
1 answer:
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Answer:
Event A：15/36
Event B：18/36
Step-by-step explanation:
We can use a table for this question，the two succession are independent so we can see it as two dice rolling at one time.
Then we just need to find out the sum which is required.
Event A: 15÷36 because there are 15 sum greater than 7 and 36 total outcomes.
Event B: 18÷36
