shannydouglas
02.08.2019 •
Mathematics
Out of 40 coins, 16 are dimes. half of the remaining coins are quarters and the rest are pennies and nickels. there are 2 nickels for every penny. how many pennies are there?
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Ответ:
So there are 8 nickels and 4 pennies
Answer 4 pennies
Ответ:
23.7°
Step-by-step explanation:
To obtain the value of AB ; Use the cosine rule ;
Recall:
c² = a² + b² - 2ab Cos C
c² = 24² + 11² - 2*24*11 Cos75
c² = 576 + 121 - 528 * 0.2588190
c² = 697 - 136.656432
c² = 560.343568
c = sqrt(560.343568)
c = 23.6715
Hence, c = AB = 23.7°