Ask question

Ask question

All categories

3 years ago

7

A 3x4x5 rectangular cuboid (e.g. a brick) is painted blue and cut into 1x1 cubes. what is the expected value for the painted sid

es of a randomly selected cube?

1 answer:

Anton [14]3 years ago

4 0

Answer:

8 cubes are painted on 3 sides

24 cubes are painted on 2 sides

22 cubes are painted on 1 sides

6 cubes are painted on 0 side

E = 3 * 8/60 + 2 * 24/60 + 1 * 22/60 + 0 * 6/60 = 47/30 = 1.567

You might be interested in

The Clark family and the Lee family each used their sprinklers last summer. The water output rate for the Clark family's sprinkl

SpyIntel [72]

Each where used for 25 hours

6 0

3 years ago

Read 2 more answers

Plz help me-7.1(z-1.1)

Elena-2011 [213]

Answer:

<h2>-7.1z +7.81</h2>

Step by step explanation:

$- 7.1(z - 1.1)$

Multiply each term in paranthesis by -7.1

$- 7.1 \times z - 7.1 \times ( - 1.1)$

Multiply:

$-7.1z + 7.81$

Hope this helps...

Good luck on your assignment..

6 0

3 years ago

17/10 - 2/5 = *<br> Helpppp

uysha [10]

17/10-(2/5x2/2)
17/10-4/10
=13/10

8 0

3 years ago

6i-5=-17 what does i equal

vagabundo [1.1K]

Answer:

-2

Step-by-step explanation:

6i-5=-17

6i=-17+5

6i=-12

i=-12/6

i=-2

7 0

3 years ago

Read 2 more answers

What is the answer to this problem 75=3(-6n-5)

devlian [24]

Answer:

n=-5

Step-by-step explanation:

first you have to distribute the 3 to the -6 and the 5. In return u will get -18n and 15. then you have to cancel like terms. then you have to add 18 to the 75 which gives you 93. then you divide -18 by 93 which gives you -5.166 repeating... so all you have to do is round. your final answer will be -5.

5 0

3 years ago