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Damm [24]
3 years ago
14

If c is a set with c elements how many elements are in the power set of c

Mathematics
1 answer:
Fofino [41]3 years ago
3 0

There would be 2 raised to c elements in the power set. Elements of the power set are formed by making a binary decision on each element of the input set: include or do not include. Since there are two choices for each element of the input set, and there are c elements in the input set, there are 2^c possible arrangements of these input elements.

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How to do this question plz answer me step by step plzz plz ​
aliya0001 [1]

Answer:

112

Step-by-step explanation:

Define the variables:

x = number of French students sent by the school

Write the equation:

x / 21 = 1 / 3

Solve:

x = 7

The school sent 7 French students and 21 German students, for a total of 28 students.

The other 3 schools also sent 28 students.  So the total number of students sent is:

4 × 28 = 112

4 0
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The perimeter formula for a rectangle is 2l + 2w, where l is the length and w is the width.
s2008m [1.1K]

Answer:

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Step-by-step explanation:

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P = 2(l + w)

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3 years ago
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3 years ago
An aeroplane is flying due north but, to avoid a storm, it flies 150km
Nataly [62]

Answer:

1) angle ABC = 80°

angle ACB = 40°

2) extra distance traveled = 122 km

Step-by-step explanation:

From the image, angle p° will be equal to 60° (alternate angles).

Angle t° will be equal to (90 - 60) = 30°.

Angle r° = (320 - 270) = 50°

Therefore angle ABC = angle (r° + t°) = (50 + 30) = 80°

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1.192 =CD/129.9

CD = 129.9 X 1.192 = 154.84 km

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If the plane had flown due north it would have covered AD + CD = 75 + 154.84 = 229.84 km

The divertion took a total distance of AB + BC = 150 + 202.11 = 352.11 km

The extra distance is 352.11 - 229.84 = 122.27 km

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4 0
3 years ago
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