3 years ago

What is the formula for finding the coordinates (x, y) of a midpoint when you know the endpoints?

Mathematics

1 answer:

Diano4ka-milaya [45]3 years ago

6 0

midpoint formula is (x1+x2/2,y1+y2/2)

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Which best describes the graphs of the line that passes through (−12, 15) and (4, −5), and the line that passes through (−8, −9)

konstantin123 [22]

Answer:

C) They are perpendicular lines.

Step-by-step explanation:

We first need to find the slope of the graph of the lines passing through these points using:

$m = \frac{y_2-y_1}{x_2-x_1}$

The slope of the line that passes through (−12, 15) and (4, −5) is

$m_{1} = \frac{ - 5 - 15}{4 - - 12}$

$m_{1} = \frac{ - 20}{16} = - \frac{5}{4}$

The slope of the line going through (−8, −9) and (16, 21) is

$m_{2} = \frac{21 - - 9}{16 - - 8}$

$m_{2} = \frac{21 + 9}{16 + 8}$

$m_{2} = \frac{30}{24} = \frac{5}{4}$

The product of the two slopes is

$m_{1} \times m_{2} = - \frac{4}{5} \times \frac{5}{4} = - 1$

Since

$m_{1} \times m_{2} = - 1$

the two lines are perpendicular.

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3 years ago

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Simplify the expression. −9(−2 − 8) + (−16) −8

Xelga [282]

Answer:

Step-by-step explanation:

Open the parentheses, 18 + 72 - 16 - 8 = 66

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Miguel is a golfer, and he plays on the same course each week. The following table shows the probability distribution for his sc

xxTIMURxx [149]

Answer:

a. p(x<= 5) = .15 + .4 + .25 = .8

C. .4(4.2) = 1.68

5.4(1-.4) = 3.24

3.24 + 1.68 = 4.92 ,, 4.92 > 4.55 so short is better

Step-by-step explanation:

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Answer:lol it’s 697

Step-by-step explanation: it could be

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Which of the following is equal to -5/4? A. -5/-4 B. -(-5/4) C. -(5/-4) D. -(-5/-4)

slavikrds [6]

Answer:

C. -(5/-4)

Step-by-step explanation:

$- \bigg(\frac{5}{ - 4} \bigg) \\ \\ = \frac{ - 5}{ - ( - 4)} \\ \\ = \frac{ - 5}{4} \\$

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3 years ago