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3 years ago

A DEF has vertices D(-5,-1), E (3, 3), and F (1,-5). Find the equation of the altitude through F in

Mathematics

1 answer:

Tems11 [23]3 years ago

4 0

Answer:

y = -2x -3

Step-by-step explanation:

- the altitude trough F is a perpendicular line to the line DE

- find slope of line DE

D ( x2 = -5, y2 = -1); E (x1 = 3, y1 = 3)

slope m = (y2-y1) / (x2-x1) = (-1-3) / (-5-3) = -4/ -8 = 1/2

-find equation of the altitude trough F

lines that are perpendicular have the slope negative reciprocal (negative reciprocal of 1/2 is -2)

y= -2x +b , for point F(1, -5)

-5 = -2*1 +b, add 2 to both sides

-5 +2 = b, combine like terms

-3 =b

equation of the altitude trough F is y = -2x -3

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Nastasia [14]

Answer:

Media = 4.1

Mediana = 4

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Step-by-step explanation:

3 personas obtuvieron 5 puntos

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Por lo tanto, la media será:

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3, 3, 4, 4, 4, 4, 4, 5, 5, 5

Como no hay un número único en el medio, la mediana es:

(4 + 4) / 2 = 8/2 = 4

c. La moda es el número que aparece más, y eso es 4

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3 years ago

I can't get the. right answer someone please help

Irina18 [472]

I think it's D because you times everything from the left column to the right column

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3 years ago

Indicate below wether the equation in the box is true or false 6/12= 1/3

Hatshy [7]

Answer:

False

Step-by-step explanation:

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You can also plug this into a calculator and see that 6/12=0.5 and 1/3=0.333

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1 year ago

Which of the following are roots of the following polynomial x^3-11x^2+33x+45

Mandarinka [93]

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x^2-12x+45
___ ________________________
x+1 | x^3-11x^2+33x+45

- (x^3+x^2)
_________________________
-12x^2+33x+45
- (-12x^2-12x)
______________
45x+45
-(45x+45)
___________
0

Since that works, it's either B or D. We just have to figure out when
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3 years ago