All categories

2 years ago

There is a bag filled with 2 blue, 4 red and 3 green marbles.

Mathematics

1 answer:

Lyrx [107]2 years ago

7 0

Answer:

.753

Step-by-step explanation:

Let Ps = probability both marbles are the same color.

Let Pd = probability both marbles are a different color.

Pd = 1 -Ps

Let Pb = probability both marbles are blue

Let Pr = probability both marbles are red.

Let Pg = probability both marbles are green

Pb= 2/9 * 1/9 = 2/81

Pr= 4/9 * 3/9 = 12/81

Pg=.3/9 * 2/9= 6/81

Ps = Pb + Pr +Pg= 20/81

Pd =1-Ps= 61/81 = .753

Is this correct?

You might be interested in

Pls help me with answer

Black_prince [1.1K]

Answer:

8hr;)

Step-by-step explanation:

4 0

2 years ago

A lake covers a surface area of about 20,000 square miles.

trapecia [35]

Step-by-step explanation:

2×1000¹⁰

hope this helps

4 0

3 years ago

Find the magnitude of v. v = -3i+ 40 + 7k v =

kherson [118]

Answer:

The magnitude of the given vector is 40.72 units.

Step-by-step explanation:

The given vector is $v=-3\widehat{i}+40\widehat{j}+7\widehat{k}$

We know that for any vector 'r' $\overrightarrow{r}=x\widehat{i}+y\widehat{j}+z\widehat{k}$ the magnitude is given by

$|r|=\sqrt{x^{2}+y^{2}+z^{2}}$

Comparing with the given vector we have

x = -3

y = 40

z = 7

Thus the magnitude equals

$|v|=\sqrt{(-3)^{2}+40^{2}+7^{2}}$

$|v|=40.72$

5 0

3 years ago

Which expression is equivalent to 2^2divided by 2/2^4

Gnesinka [82]

Answer: 32

Step-by-step explanation:

The expression that is equivalent to 2^2 divided by 2/2^4 would be calculated as:

= 2^2 ÷ 2/2^4

= 4 ÷ 2/16

= 4 ÷ 1/8

= 4 × 8

= 32

The expression would be equal to 32 based on the above calculation

4 0

3 years ago

In a survey of 232 students, about 5.5% have attended more than one play. Which is closest to the number of students in the surv

dybincka [34]

Answer:

Step-by-step explanation:

Number of students that attended more than play = percentage of students that attended more than play x total number of students

5.5% x 232

0.055 x 232 = 12.76 students

to round off to the nearest whole number, look at the first number after the decimal, if it is less than 5, add zero to the units term, If it is equal or greater than 5, add 1 to the units term.

Since the first term is 7 which is greater than 5, 1 would be added to it.

This gives 13

6 0

3 years ago