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adriana145
23.02.2021 •
Mathematics
What do you divide 14 by to get 5?
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Ответ:
70
Step-by-step explanation:
Ответ:
How you find this would be using 14 x 5, and you would get 70. Then thats how you know you can divide because its reverse operations
Ответ:
d) 330
Step-by-step explanation:
The number of ways can a dance instructor send 4 of her 11 students to summer dance program is C(11 , 4)
That is
ways
by using formula![n_{C_{r} } = \frac{n!}{(n-r)!r!}](/tpl/images/0553/8244/2a56f.png)
now simplification
=![\frac{11X10X9X8X7!}{(7!)4X3X2X1}](/tpl/images/0553/8244/4c125.png)
after cancelling 7! and on simplification
=![\frac{11X10X9X8}{4X3X2X1}](/tpl/images/0553/8244/82d04.png)
after cancellation we get 330 ways
The number of ways can a dance instructor send 4 of her 11 students to summer dance program is 330