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amid [387]
3 years ago
6

What is the value of k?

Mathematics
1 answer:
STatiana [176]3 years ago
4 0

Answer:k=42


Step-by-step explanation:

(5k−3)(9+k)

=(5k+−3)(9+k)

=(5k)(9)+(5k)(k)+(−3)(9)+(−3)(k)

=45k+5k2−27−3k

=5z2+42z−27

=42k



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tan\left(-\frac{13\pi}{6}\right)=-tan\left(2\frac{1}{6}\pi\right)=-tan\left(2\pi+\frac{1}{6}\piright)=-tan\frac{1}{6}\pi=-\frac{\sqrt3}{3}
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Give an example of an equation that is a linear function. Explain why is is a linear
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For example, a common equation, y=mx+b y = m x + b

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is a linear function because it meets both criteria with x and y as variables and m and b as constants.

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N is a whole number such that 6< 3n < 15 List all the possible values of n.​
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6 0
3 years ago
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How many ways are there to select 7 countries in the United Nations to serve on a council if 3 is selected from a block of 54, 1
Strike441 [17]

Answer:

Total number of ways will be =8.44727\times 10^{10}ways

Step-by-step explanation:

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Now 1 country is selected from 66 block

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Now next 3 country is selected from 69 country

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So total number of ways to select 7 countries = 24804×65×52394 =8.44727\times 10^{10}ways

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