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2 years ago

The midpoint of AB is M(-1, –4). If the coordinates of A are (-3, -7), what are

Mathematics

1 answer:

quester [9]2 years ago

5 0

Answer:

Step-by-step explanation:

If M(-1, 4) is midpoint of AB then:

$x_M-x_A=x_B - x_M\qquad\quad\ \wedge\qquad y_M-y_A=y_B - y_M\\\\ -1-(-3)=x_B-(-1)\qquad\wedge\qquad -4-(-7)=y_B -(-4)\\\\ -1+3=x_B+1\qquad\qquad\wedge\qquad\ \ -4+7=y_B+4 \\\\ {}\qquad x_B=1\qquad\qquad\wedge\qquad\qquad \ y_B=-1$

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Step-by-step explanation:

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$P(A)=\sum^6_{i=1} P(A|D_i)P(D_i)$

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Part B:

The conditional probability that the die landed on 3 if all the balls selected are white:

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The data required is calculated above:

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