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lesya692
8 days ago
5

Let a,b,c and d be constants. Determine which of the lines, if any, are parallel or perpendicular.

Mathematics
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Imagine that after washing 5 distinct pairs of socks, you discover that two socks are missing! of course, you would like to have
Zina [12379]
Part A:

Considering the best possible outcome

The ideal case occurs if the two missing socks are from the same pair.
Consequently, there are 4 complete pairs remaining.

To choose 2 from the total of 10 socks (5 pairs), the number of combinations is given by 10C2 = 45.

Choosing 2 that are from the same pair means selecting one from 5 pairs, so the count is 5C1 = 5.

Thus, the probability for this best case is 5 / 45 = 1 / 9.

Part B:

Considering the worst-case outcome

This scenario occurs when the two missing socks are from different pairs.
As a result, we have 3 complete pairs left.

The total ways to select 2 socks from 10, again, is 10C2 = 45.

To select 2 that do not belong to the same pair, we calculate as follows: 10C2 - 5C1 = 45 - 5 = 40.

Therefore, the probability for the worst-case scenario is 40 / 45 = 8 / 9.
5 0
3 months ago
A cone is cut out of the center of a pyramid with a rectangular base. The rectangular base has side lengths of 15 and 10 units.
Svet_ta [12734]

Answer:

Volume of the shaded area = (600 - 36π) units³

Step-by-step explanation:

Volume of the shaded area = Volume of pyramid - Volume of cone

Volume of pyramid = ⅓*l*w*h

Where,

l = length of the base of the pyramid = 15 units

w = width of the base of the pyramid = 10 units

h = height of pyramid = 12 units

Substituting the values helps find the volume of the pyramid

Volume of pyramid = ⅓*15*10*12 = 5*10*12 = 600 units³

Volume of Cone = ⅓πr²h,

Where,

r = radius = ½ of diameter = ½ of 9 = 3 units

h = height = 12 units

Volume of Cone = ⅓*π*3²*12 = ⅓*π*9*12

= π*3*12 = 36π units³

Volume of shaded area = (600 - 36π) units³

3 0
2 months ago
Zane is a dangerous fellow who likes to go rock climbing in active volcanoes. One time, when he was 20 meters below the edge of
babunello [11817]

Response:

la respuesta está abajo

Explicación paso a paso:

Debemos encontrar la ecuación para poder graficar.

De acuerdo a la afirmación, la ecuación sería:

E = v * t - Ei

Siendo Ei (20) la elevación inicial, t el tiempo transcurrido y la velocidad de 4, realizamos la sustitución y obtenemos:

 E = 4 * t - 20

A continuación, debemos calcular los valores correspondientes:

E (0) = 4 * 0 - 20 = -20

E (1) = 4 * 1 - 20 = -16

E (2) = 4 * 2 - 20 = -12

E (3) = 4 * 3 - 20 = -8

E (4) = 4 * 4 - 20 = -4

E (5) = 4 * 5 - 20 = 0

Si graficamos, tendríamos la imagen anexa:

4 0
3 months ago
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