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2 years ago

(I need help) - 2/3 divided by 4/6 = ?

Mathematics

1 answer:

Ket [755]2 years ago

3 0

The correct answer would be 1.

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A die is rolled nine times and the number of times that two shows on the upper face is counted. If this experiment is repeated m

vivado [14]

Answer:

$E(x) = 1.5\\$

Step-by-step explanation:

Given

$n = 9$ -- number of rolls

Required

The mean of 2's

The distribution follows binomial distribution where:

$X \to Binomial(n,p)$

In this case:

$p= \frac{1}{6}$ ---- the theoretical probability of rolling 2

So, the mean of 2's is calculated using:

$E(x) = np$

$E(x) = 9 * \frac{1}{6}$

$E(x) = \frac{9}{6}$

Simplify

$E(x) = \frac{3}{2}$ or

$E(x) = 1.5\\$

5 0

3 years ago

Find the perimeter and area of rectangle ABCD.

nikklg [1K]

Add up all the sides which should equal 32

8 0

3 years ago

Read 2 more answers

Movie genres. The pie chart summarizes the genres of 120 first-run movies released in 2005. a) Is this an appropriate display fo

butalik [34]

Answer:

Yes, it is appropriate

Step-by-step explanation:

Given

See attachment for pie chart

Required

Is the pie chart appropriate

The attached pie chart displays the distribution of each of the 4 genre. The partition occupied represents the measure of each genre.

5 0

3 years ago

A right triangle has one angle that measures 3x+ 6 and one angle that measure 5x -20. What are the measures of each angle?

Elden [556K]

Answer: just use photomath

Step-by-step explanation:

3 0

2 years ago

If m angle KNM = (8x - 5)° and m angle MNJ = (4x - 19)° , find the measure of angle KNM.

Murrr4er [49]

Answer:

131°

Step-by-step explanation:

Since KNJ is a straight line,

∡KNM +∡MNJ= 180° (adj. ∡s on a str. line)

(8x -5)° +(4x -19)°= 180°

Simplify:

12x -24= 180

+24 on both sides:

12x= 180 +24

12x= 204

Divide both sides by 12:

x= 204 ÷12

x= 17

∡KNM

= (8x -5)°

= [8(17) -5]°

= (136 -5)°

= 131°

4 0

3 years ago