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babunello [35]
2 years ago
7

AJUTOOR! DAU TEST :((

Mathematics
1 answer:
ch4aika [34]2 years ago
6 0

Answer:

1/7 = 1/7

Step-by-step explanation:

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Ella and Iris are planning trips to nine countries this year. There are 12 countries they would like to visit. They are deciding
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Using the combination formula, it is found that there are 220 ways to decide which countries to skip.

The order in which the countries are skipped 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, 3 countries are skipped from a set of 12, hence the number of ways is given by:

C_{12,3} = \frac{12!}{3!9!} = 220

More can be learned about the combination formula at brainly.com/question/25821700

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5 0
2 years ago
Referring to the figure, is the transformation a
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yes.

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90 Degree Rotation. When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x).

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2 years ago
Which expression is equivalent to 2(-3x+5)?<br> A.-6x+5<br> B.-6x+10<br> C.6x-10<br> D.6x-5
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B if you’re doing distributive property
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If x degree and 115 degree are co exterior angles find the vaule of x degree
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An exterior angle form a linear pair with an interior angle.

A linear pair of angles must add up to 180 degrees

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