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STatiana [176]
3 years ago
7

Prove that A is in the subset B if P(A) is in the subset P(B)

Mathematics
1 answer:
natima [27]3 years ago
5 0
Show that if p(a) ⊂ p(b) then a ⊂ b. 

<span>I will assume p() means power set. </span>

<span>proof: let x∈a, then {x} ∈ p(a) and so by hypothesis {x} ∈ p(b). However {x} could not be in p(b) unless x∈b. This shows that each element of a is an element of b and hence a ⊂ b.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
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A rocket is launched into the air. The projectile motion of the rocket can be modeled using h(t) = 112t –16t2, where t is the ti
asambeis [7]

Answer:

3.5 seconds.

Step-by-step explanation:

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5 0
2 years ago
Which of the following expressions is correctly written in scientific notation
katrin [286]

Answer:

it is the 3 one

Step-by-step explanation:

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2 years ago
URGENT!!!!!! Find the value of q in the following system so that the solution to the system is——
valkas [14]
<h3>Answer:  Q = 8</h3>

====================================================

Explanation:

The left hand side of the first equation is x-3y

The left hand side of the second equation is 2x-6y = 2(x-3y). Note how it's simply double of the first expression x-3y

If we multiply both sides of the first equation by 2, we get

x-3y = 4

2(x-3y) = 2*4

2x-6y = 8

Meaning that 2x-6y = 8 is equivalent to x-3y = 4. Both produce the same line leading to infinitely many solutions. Each solution will lay along the line x-3y = 4.

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Which is the same as saying each solution is of the form (3y+4,y)

4 0
3 years ago
Can someone please help me with the question in the image. i will mark as brainliest if correct
ExtremeBDS [4]

Answer: 15

Step-by-step explanation:

x:9 = 25:15

x = 25:15*9 = 15

5 0
3 years ago
I’ll give u brainliest!!<br> what is the area of shape 1, 2 and 3
nevsk [136]

Answer:

Shape 1: 25.915

Shape 2: 102.85

Shape 3: 142

Step-by-step explanation:

For shape 1, you have to divide 7.1 to get half the width of the triangle. You get 3.55 from that, and then finding the triangle itself you have to do 7.3*3.55 to get 25.915. For shape 2, you first do the harder parts (the triangles) and since there is two of them we don't need to half the width of each triangle. But first to get the width, we need to do 20-17.4=2.6. But since there are 2 triangles we need to divide that by 2 to get 1.3. Then you multiply that by 5.5 to get the final area of both triangles which is 7.15. Next you simply find the rectangle which is 17.4*5.5=95.7. You add the triangles area to get 102.85. Finally for shape 3 you simply do 7.1*20=142.

3 0
3 years ago
Read 2 more answers
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