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иван1208
28.10.2020 08:55
Математика
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One hundred and twenty people attended a musical. The total amount of money collected for tickets was $ 1515. Prices were $ 15 for rices were regular adult admission, $ 12 for children, and $ 10 for senior citizens. Twice as many children's tickets as regular adult tickets were sold. Write a system of equations to find the number of children, adults, and senior citizens that attended the musical. Then solve the system by using a matrix equation and the inverse matrix.

237
449
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Ответы на вопрос:

vayler50p014sh
vayler50p014sh
4,7(7 оценок)
Х (-25,5)
Пояснение:
-12-(-39)=-12+39=27 - расстояние между точками М и К.
-39+27/2=-39+13,5=-25,5 - координата точки Х.

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