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oksano4ka [1.4K]
3 years ago
15

4(3x + 10) = 40 determine if its true explain please

Mathematics
1 answer:
natali 33 [55]3 years ago
7 0
It is 4×3x + 4×10 = 12x + 40


you have to know the value of x in order to have a solid number
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In how many ways can a photographer at a wedding arrange six people in a row, including the bride and groom, if a) the bride mus
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Answer: a) 240, b) 480, c) 360

Step-by-step explanation:

Since we have given that

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So, using the fundamental theorem of counting

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4!=4\times 3\times 2\times 1=24

Since bride has 5 positions to stand and grooms too has 5 positions to stand.

so, Number of positions for both bride and groom = 5+5=10

So,  a) the bride must be next to the groom?

Number of ways = 24\times 10=240

b) the bride is not next to the groom?

Total number of ways would be

6!=6\times 5\times 4\times 3\times 2=720

So, Number of ways that the bride is not next to the groom is

720-240=480

c) the bride is positioned somewhere to the left of the groom?

If Groom is in second position, bride has 1 ways to stand

If Groom is in third position , bride has 2 ways to stand

If Groom is in fourth position, bride has 3 ways to stand

If Groom is in fifth position, bride has 4 ways to stand

If Groom is in sixth position, bride has 5 ways to stand.

So, Number of ways to stand = 1+2+3+4+5=15

So, the total number of ways bride is positioned somewhere to the left of the groom is given by

24\times 15=360

Hence, a) 240, b) 480, c) 360

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