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3 years ago

I need help u guys plzz?

Mathematics

1 answer:

Slav-nsk [51]3 years ago

6 0

Answer:

Step-by-step explanation:

10!/(10-2)!

n!=n(n-1)!

10•9•8!/(10-2)!

10•9•8!/8!

The 8! cancels out and you're left with 10•9

So, your answer is 90

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Find the value of -|-2 + 9| A. 7 B. -11 C. -7

nexus9112 [7]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

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2 years ago

Please help due tomorrow

mel-nik [20]

Answer: x= 2.5, y = 10

Step-by-step explanation:

I'm going to assume that these photocopies are proportional in relations to each other.

If they're proportional, you can set up two proportions:

$1) \frac{x}{5} =\frac{3}{6} \\\\2) \frac{5}{y} =\frac{3}{6}$

And cross-multiply:

$1) 6x = 5*3 \\\\2) 3y = 5*6$

Then solved for x and y:

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3 years ago

What is the product? 3 x [1 -4 5 -7]

Roman55 [17]

This looks like scalar matrix multiplication. The idea here is to multiply the scalar 3 by each item inside the matrix.

Doing so leads to the answer [3 -12 15 -21]

Side note: I'm assuming the matrix given to you has 1 row and 4 columns.

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3 years ago