ellie55991
24.03.2020 •
Mathematics
Use the following diagram for Questions 1-4: Scientists measured the lengths of a species of lizard in Region A. The graph below shows that the measured lengths have a normal distribution.
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Ответ:
single cone 9, double cone 6
Step-by-step explanation:
Let x be people who took single cone, so 15-x is the ones who took double cone
so,
3x+5(15-x)=57
3x+75-5x=57
2x=18
x=9
single cone = 9
double cone = 15-9 = 6