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Aleks04 [339]
3 years ago
9

A grid with 3 rows and 52 columns is tiled with 78 identical 2x1 dominoes. How many ways can this be done such that exactly two

of the dominoes are vertical?
Any Idea?
Mathematics
1 answer:
iren2701 [21]3 years ago
6 0
A grid with 3 rows and 52 columns is tiled with 78 identical 2x1 dominoes. How many ways can this be done such that exactly two of the dominoes are vertical?
There are 39 ways that exactly two of the dominoes are vertical.
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11/3 can be thought of as a whole number and a fraction.
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11/3 = 3 2/3 as a mixed fraction or proprr fraction
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3 years ago
I NEED HELP ASAP!!!PLEASE EXPLAIN THE ANSWER
Dimas [21]

Answer:

Below

Step-by-step explanation:

To find surface area, you can just find the area of each side and add them up!

11 ft x 9 ft x 2 = 198 ft^2 (this is the surface area of the front and back)

12 ft x 9 ft x 2 = 216 ft^2 (this is the surface area of the sides)

12 ft x 11 ft x 2 = 264 ft^2 (this is the surface area of the top and bottom)

Surface area = 198 + 216 + 264

                      = 678 ft^2

Hope this helps! Best of luck <3

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3 years ago
1. Find the HCF of the following numbers by prime factorisation and continued division method10,35,40​
statuscvo [17]

Answer:

Step-by-step explanation:

10 = 2*5

35 = 5*7

40 = 2*2*2*5

The number 5 is common to all three  factorisations

So the HCF = 5.

Continued division:

10 and 35:

 10) 35(3

       30

          5)10(2

              10

                0

- so the HCF of 10 and 35 is 5.

10 and 40:

10)40( 4

     40

        0  

So the HCF of 10 and 40 is 10

We found HCF of 10 and 35 is 5 so:

HCF of 10, 35 and 40 is HCF of 5 and 10 which is 5.  

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Step-by-step explanation:

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True, True, False

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