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Lerok [7]
3 years ago
7

the length of a rectangle is 2 cm less than 7 times the width.the perimeter is 60 cm. find the width and length

Mathematics
2 answers:
Vladimir [108]3 years ago
8 0

4 and 26 are the width and length

Mnenie [13.5K]3 years ago
5 0
Width = 4
length = 26
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DJ Mykel is making a playlist for a radio show; he is trying to decide what 14 songs to play and in what order they should be pl
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Answer:

5878600 different playlists.

Step-by-step explanation:

Since we require 14 songs for the playlist and there are 7 hip-hop, 5 jazz, 7 pop, and 8 blues songs, and DJ Mykel wants to play no more than 3 hip-hop songs, the number of ways in which he can combine the 7 hip-hop songs to play no more than 3 is ⁷C₃ = 7!/4!3!.

Now, since we have 3 songs already selected, we are left with 14 - 3 = 11 songs to select.

Since we have selected the 3 hip-hop songs, we are left with 5 jazz, 7 pop, and 8 blues songs which sum to a total of 20 songs.

So, we have 20 songs to select in 11 ways which is ²⁰C₁₁ = 20!/(20 - 11)!11! = 20!/9!11!

So, the number of different playlists that can be formed is thus

⁷C₃ × ²⁰C₁₁ =  7!/4!3!.× 20!/9!11!

= 35 ×  167960

= 5878600 different playlists.

8 0
2 years ago
Need an answer, please need an answer, please​
inna [77]

Answer:

Step-by-step explanation:

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4x - 5 = -4x²

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12x² +x -6 = 0

a = 12 ; b = 1 ; c = -6

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Answer:

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Answer:

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