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Marrrta [24]
2 years ago
8

What is the difference when −2 is subtracted from 2?

Mathematics
2 answers:
lions [1.4K]2 years ago
6 0

Answer:

4

Step-by-step explanation:

2-(-2)=2+2=4

ZanzabumX [31]2 years ago
3 0
The answer is 4.
The equation would look like 2-(-2). The negatives cancel each other out so it would be 2+2 which is 4. They only cancel each other out when the negatives are right next to each other in an equation. For example, -2-2 would be -4 and there would be no addition.
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The random variable X~(30,2^2) <br> Find p(X&lt;33) <br> Find p(X&gt;26)
Ostrovityanka [42]

Answer:

i) P(X<33)  = 0.9232

ii) P(X>26) = 0.001

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the mean of the Population = 30

Given that the standard deviation of the Population = 4

Let 'X' be the Normal distribution

<u>Step(ii):-</u>

i)

Given that the random variable  X = 33

               Z = \frac{x-mean}{S.D}

               Z = \frac{33-30}{2} = 1.5 >0

P(X<33) = P( Z<1.5)

              = 1- P(Z>1.5)

             = 1 - ( 0.5 - A(1.5))

             = 0.5 + 0.4232

  P(X<33)  = 0.9232

<u>Step(iii) :-</u>

Given that the random variable  X = 26

               Z = \frac{x-mean}{S.D}

               Z = \frac{33-26}{2} = 3.5 >0

P(X>26)  = P( Z>3.5)

              = 0.5 - A(3.5)

              = 0.5 - 0.4990

             = 0.001

P(X>26) = 0.001

5 0
3 years ago
The length of a rectangle is four more than three times the width. If the perimeter of this rectangle is at least 70 square cent
FrozenT [24]

Answer:

Step-by-step explanation:

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Let W represent the width of the triangle.

The length of a rectangle is four more than three times the width. This means that

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2(L + W) ≥ 70

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L + W ≥ 35

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Step-by-step explanation

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Answer:

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