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3 years ago

7

30 people watched the soccer game last night tickets cost 2.75 each half of these fans bought a program at 1.50 each how much mo

ney was collected

1 answer:

Dima020 [189]3 years ago

5 0

Answer: 105$
Half the ppl paid 1.50 for programs which is 15 x 1.5 = 22.5
30 ppl bought tickets 30x2.75
Add the totals to get 105

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$\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 7}}\quad ,&{{ 1}})\quad 
% (c,d)
&({{ x}}\quad ,&{{ y}})
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)
\\\\\\
\left(\cfrac{{{ x}} + {{ 7}}}{2}\quad ,\quad \cfrac{{{ y}} + {{ 1}}}{2} \right)=(3,-2)\implies 
\begin{cases}
\frac{x+7}{2}=3\\
x+7=6\\
x=6-7\\
------\\
\frac{y+1}{2}=-2\\
y+1=-4\\
y=-4-1
\end{cases}$

so, x = -1 and y = -5, that gives us ( -1, -5) or -1 - 5i on the imaginary grid

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3 years ago

Read 2 more answers