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Pachacha [2.7K]
4 years ago
9

Given line segment AB, the coordinates of A are (3,-5) and the coordinates midpoint are (5,-1), what are the coordinates for B?

Mathematics
1 answer:
dsp734 years ago
6 0

Answer:

<h3>           B(7, 3)</h3>

Step-by-step explanation:

Point P(5, -1) being the midpoint of AB means that  x_P-x_A=x_B-x_P

5-3=x_B-5\\\\2+5=x_B\\\\x_B=7

and   y_P-y_A=y_B-y_P

-1-(-5)=y_B-(-1)\\\\-1+5=y_B+1\\\\y_B=3

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4. Elena va a una fiesta pero no sabe que ponerse, así que lanza un moneda y un dado al
taurus [48]

Answer:

  • <u>1/4</u>

Explanation:

Hola. Puesto que tu pregunta está en español, te responderé en el mismo lenguage.

Estas son las posibilidades dadas por la combinación moneda/dado

                                      Número de combinaciones

Moneda: prenda

    Cara: vestido                 1 de 2:          1/2

     Sello: falda                    1 de 2:          1/2

Dado: color

    Par: negro                      3 de 6:          3/6

    Impar: café                     3 de 6:         3/6

En total son 2 × 6 resultados: 12 (incluye resultados repetidos, no son todos diferentes entre sí)

¿Cuántas combinaciones tienen vestido y color negro?

  • P(Vestido∩negro) = ?

Es decir: moneda = cara y dado = par

  • Son 1 × 3 = 3.

Por tanto, la probabilidad de vestido negro es:

  • 3 de 12 = 3/12 = 1/4 ← respuesta

Hay otras formas de resolverlo. Por ejemplo;

Como los resultados de lanzar la moneda y el dado son independientes:

  • P(Vestido∩negro) = P(Vestido) × P(Negro)
  • P(Vestido) = 1/2
  • P(Negro) = 3/6 = 1/2
  • P(Vestido) × P(Negro) = 1/2 × 1/2 = 1/4 ← mismo resultado
8 0
4 years ago
Which step comes first -b-2&lt;8
Bingel [31]

Answer:

Step-by-step explanation:

Alright so the step that comes first is adding two to both sides.

Let me show you,

Step 1

-b-2<8  Add 2 to both sides

-b<10

Then you divide the sides by -1

-b<10

b>-10

3 0
3 years ago
Please help with the picture attached
vladimir2022 [97]
The answer is 3a•(3a+5)
4 0
3 years ago
Using the table below, what is Xavier's take-home pay?
damaskus [11]

Answer:

b

Step-by-step explanation:

6400+2448+1600+75=10523

32,000-10523=21477

7 0
3 years ago
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23×8= 184
The answer is 184
4 0
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