Question

ПОМОГИТЕ МНЕ ПОЖАЛУЙСТА СРОЧНО! ДАЮ 30 БАЛЛОВ!
ЗАДАНИЕ ВО ВКЛАДЫШЕ!!!

Answer 1

Ответ:

$s = \frac{1}{5} \times 100 + \frac{1}{200} \times {100}^{2} = 20 + 50 = 70 \\ \\ s = \frac{1}{5} \times 20.4 + \frac{1}{200} \times {20.4}^{2} = 6.1608 \\ \frac{1}{5} \times 28.5 + \frac{1}{200} \times {28.5}^{2} = 9.76125$

Answer 2

$S=\dfrac{1}{5}\, v+\dfrac{1}{200}\, v^2=\dfrac{1}{200}\, v\cdot \Big(40+v\Big)\\\\\\4)\ \ v=100:\ \ S=\dfrac{100}{200}\cdot (40+100)=\dfrac{1}{2}\cdot 140=70\\\\\\5\ \ v=20,4:\ \ S=\dfrac{20,4}{200}\cdot (40+20,4)=0,102\cdot 60,4=6,1608\\\\\\6)\ \ v=28,5:\ \ S=\dfrac{28,5}{200}\cdot (40+28,5)=0,1425\cdot 68,5=9,76125$