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3 years ago

Given a bag of 5 blue, 3 green, and 8 red marbles.. What is the probability of picking 3 green

1 answer:

Ber [7]3 years ago

4 0

Ok ok I know you hate links but this is the only way to show you the answer.

Full credit to the original owner

https://www.quora.com/What-is-the-probability-that-both-marbles-are-green-if-a-bag-contains-3-green-marbles-and-5-purple-marbles-and-two-are-drawn-at-random-without-replacement

The entire answer is explained in there

You might be interested in

Two rectangles have a area of 81 square inches. Name two possible perimeters for the rectangles

jeka94

Answer:

3, 27 and 9,9

Step-by-step explanation:

3*27 = 81

9*9=81

Technically you could say 1 and 81 but those two answers fit the most.

3 0

3 years ago

Screen sizes for televisions are measured by the diagonal length from one corner to the opposite corner on the other side. After

JulsSmile [24]

Answer:

Step-by-step explanation:

This is a ratio problem

Step one:

Given the ratio of length:width is <em> "3 space colon space square root of 3"</em>

mathematically it is expressed as

length:width 3:√3 or 3/√3

Step two:

3:√3 or 3/√3

if the built TV has a width of 6ft let the length be x

3/√3=x/6

cross multiply we have

x√3=3*6

x√3=18

x=18/√3ft

therefore the length will be 18/√3ft

6 0

3 years ago

Which statements about the hyperbola are true? Check all that apply. A. There is a focus at (0,−10). B. There is a focus at (0,

hichkok12 [17]

Answer:

A. There is a focus at (0,−10).

Step-by-step explanation:

Assume the hyperbola is like the one below.

The hyperbola is vertical and centred on the y-axis, so its general equation is

$\dfrac{y^{2}}{a^{2}} - \dfrac{x^{2}}{b^{2}} = 1$

The vertices of your parabola are (0,±8) so a = 8.

The covertices are (±6,0), so b = 6.

Calculate c

$\begin{array}{rcl}a^{2} + b^{2} & = & c^{2}\\8^{2} + 6^{2} & = & c^{2}\\64 + 36 & = & c^{2}\\100 & = & c^{2}\\c & = & \mathbf{10}\\\end{array}$

A. Foci

The foci are at (0, ±c) = (0, ±10)

TRUE. There is a focus at (0,-10).

B. Foci

The foci are at (0,±10).

False. There is no focus at (0,12)

C. and D. Asymptotes

The equations for the asymptotes are

$y = \pm\dfrac{a}{b}x = \pm\dfrac{8}{6}x = \pm\dfrac{4}{3}x$

So, y = ±x are not asymptotes.

False.

E. and F. Directrices

The equations of the directrices are

y = ±a²/c = ±64/10 = ±6.4

y = 6.4 is a directrix.

E is false. x = cannot be a directrix

F is uncertain. Your equation for the directrix is incomplete.

3 0

4 years ago

AVprozaik [17]

Step-by-step explanation:

Y is directly proportional to X" can be rewritten as a mathematical expression of the form Y = KX

"K" is the constant of proportionality and must be determined from the initial information.

If Y = 2/3 when X=1/12means 2/3=1/12

K = 2/3÷1/12 = 8

Now that we know the value of K, we can use it to calculate the value of Y when X=1/2

Y = (8)(1/2) = 8/2=4

Y=4

8 0

2 years ago

For a new neighborhood, 1 acre of land will be split into 2 lots. How many acres of land will each lot have?

Karolina [17]

Each lot will have 1/2 of an acre

3 0

3 years ago

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