3 years ago

HELP ME PLEASE!

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

3 0

(1.2×10^-3)/(4×10^6)
1.2/4=0.3
(10^-3)/(10^6)=10^-9

0.3×10^-9= 3×10^-10

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What is the solution to the system of equations for y= -2x - 4 and y= 2x + 4

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8 0

3 years ago

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salantis [7]

Using the combination formula, it is found that if the first flag is orange then the number of different signals consisting of 4 flags is 364.

The order in which the flags are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.

<h3>What is the combination formula?</h3>

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by:

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this problem, considering that the first flag is orange, 3 flags will be chosen from a set of the remaining 14, hence the number of signals is given by:

$C_{14,3} = \frac{14!}{3!11!} = 364$