The question is on the attachement below and there is a tree diagram with information on it.
1 answer:
Answer:
56 times
Step-by-step explanation:
P(red & red) = 0.5×0.6 = 0.3
Expected no. = no. Of trials × p
No. of trials: 84/0.3 = 280
P(blue & blue) = 0.5×0.4 = 0.2
Expected no. = 280 × 0.2
= 56
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Answer:
0.375
Step-by-step explanation:
The price of an item has dropped to $84 today. yesterday it was $120 . find the percentage decrease.
3/9 = x/36
Now cross multiply
108 = 9x
X = 12
Answer:
293 feet.
Step-by-step explanation:
Their track is 500 feet, and there are three sections. Add these sections(61+83+63=207) and subtract from the total(500-207=293)
