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2 years ago

PLEASEEEE HELPPP

Mathematics

2 answers:

JulijaS [17]2 years ago

8 0

Answer:

second choice, third choice, forth choice, fifth choice

Step-by-step explanation:

I don't know how to explain them. You can just look at it by the picture

soldier1979 [14.2K]2 years ago

4 0

Ik I’m not know help but gee I forgot this just go on google

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3 years ago

If m∠ABC = 72°, what is m∠DAB?<br> A) 72° <br> B) 108° <br> C) 144° <br> D) 216°

11111nata11111 [884]

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2 years ago

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How do I find the equation of the perpendicular bisector between (-2,5) and (2,-1)?

Arturiano [62]

Answer:

$y = \frac{2}{3} x + 2$

Step-by-step explanation:

Start by finding the slope of the given line.

$\boxed{ slope = \frac{y _{1} - y_2 }{x_1 - x_2} }$

Slope of given line

$= \frac{5 - ( - 1)}{ - 2 - 2}$

$= \frac{5 + 1}{ - 4}$

$= \frac{6}{ - 4}$

$= - \frac{3}{2}$

A perpendicular bisector cuts through the line at its midpoint perpendicularly.

The product of the slopes of two perpendicular lines is -1.

Let the slope of the perpendicular bisector be m.

$- \frac{3}{2} m = - 1$

$m = - 1 \div ( - \frac{3}{2} )$

$m = - 1 \times ( - \frac{2}{3} )$

$m = \frac{2}{3}$

$y = \frac{2}{3}x + c$ , where c is the y-intercept.

To find the value of c, we need to substitute a pair of coordinates that lies on the perpendicular bisector into the equation. Since the perpendicular bisector passes through the midpoint of the given line, we can use the midpoint formula to find the coordinates.

$\boxed{midpoint = ( \frac{x _{1} + x _2}{2} , \frac{y_1 + y_2}{2} )}$