Can someone PLEASE help me And I will give BRAINLY!! I don’t know if it’s the 2nd or 3rd one

Mathematics

1 answer:

tatyana61 [14]3 years ago

7 0

Answer:

Step-by-step explanation:

Open dots represent everything leading up to a number, but do not include the number itself, and closed dots include the number. Therefore, it would need to be B.

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A mother is three times as old as her daughter, and the sum of their ages

garri49 [273]

Answer:

Step-by-step explanation:

If m = Mother's age and d = daughter's age, we can make the following equations

m = 3d

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Now, using substitution, we can substitute m for 3d in the second equation:

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$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
M(\stackrel{x_1}{-2}~,~\stackrel{y_1}{1})\qquad 
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\qquad
% coordinates of midpoint 
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