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3 years ago

Please answer I’ll rate brainlyest

Mathematics

2 answers:

Nina [5.8K]3 years ago

7 0

Answer:

The correct answer is third option 8C₆ = 28

Step-by-step explanation:

Formula:-

nCr = (n!)/r!(n - r)!

To find the value of 8C₆

By the formula we can write,

8C₆ = 8!/6!(8 - 6)!

= 8!/6!2!

= (8 * 7 * 6!)6!2!

= (8 * 7)/(1 * 2 )

= 56/2 = 28

Therefore the correct answer is third option 8C₆ = 28

Elis [28]3 years ago

4 0

Answer:

Step-by-step explanation:

8C6

= 8! / (6!(8−6)!)

= 8! / 6! 2!

= 8 x 7 x 6! / 6! x 2 x 1

= 56/2

= 28

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3 years ago

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3 years ago

A store sells toys in bulk. It sells wooden blocks for $5 a pound and plastic bricks for $10

steposvetlana [31]

Answer:

4 pounds of wooden blocks and 6 pounds of plastic bricks should be used.

Step-by-step explanation:

Let w = wooden block

Let p = plastic bricks

Given the following data;

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*Translating the word problem into an algebraic equation*

For the 10-pound mixture;

$w + p = 10$ .........equation 1

For the $80 mixture;

$5w + 10p = 80$ ..........equation 2

Solving the linear equation by using the substitution method;

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$w = 10 - p$ .......equation 3

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3 years ago