Which of the following is the midpoint between (3, 9) and (7, -3)?

Mathematics

1 answer:

Artyom0805 [142]2 years ago

4 0

Answer:

(5 , 3)

Step-by-step explanation:

The midpoint = (3+7)/2 , (9-3)/ 2

= 10/2, 6/2

= (5 , 3)

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so we know that 24% of the students buy their lunch at the cafeteria, and 190 students brownbag.

well, 100% - 24% = 76%, so the remainder of the students, the one that is not part of the 24% is 76%, and we know that's 190 of them.

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$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 190&76\\ x&24 \end{array}\implies \cfrac{190}{x}=\cfrac{76}{24}\implies 4560=76x \\\\\\ \cfrac{4560}{76}=x\implies 60=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{total amount of students}}{190+60\implies 250}$