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Deffense [45]
2 years ago
8

The formula for the perimeter, P, of a rectangle is P = 2(1 + w),

Mathematics
2 answers:
gtnhenbr [62]2 years ago
8 0
Answer:
You he length of the rectangle is:
155 cm
Triss [41]2 years ago
4 0

Answer:

l=155cm

Step-by-step explanation:

Given the following question:

P=2(l+w)
P=400cm
w=45cm

In order to find the length of the given rectangle complete the following steps.
400\div2=200
200-45=155
l=155cm

<u>Check your work:</u>
P=2(l+w)
l=155
w=45
P=2(155+45)
155+45=200
2\times200
2\times200=400
p=400cm

Hope this helps.

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4x^2 + 36 / 4x × 1 / 5x
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Given with a polynomial 4X² + 36/4X *1/5X, we can combine terms with the same power. First, let us perform multiplication of the 2nd and 3rd terms such as the given become 4X² + 36/20X². Then, we can reduce 36 and 20 by 4 and the result is 4X² + 9/5X². We can now proceed combining the terms since they have same power and result will be same as below:
(20X^4 + 9)/5X²
3 0
3 years ago
How do you find the normal approximation without using the continuity correction?
Dennis_Churaev [7]
Let's say you want to compute the probability \mathbb P(a\le X\le b) where X converges in distribution to Y, and Y follows a normal distribution. The normal approximation (without the continuity correction) basically involves choosing Y such that its mean and variance are the same as those for X.

Example: If X is binomially distributed with n=100 and p=0.1, then X has mean np=10 and variance np(1-p)=9. So you can approximate a probability in terms of X with a probability in terms of Y:

\mathbb P(a\le X\le b)\approx\mathbb P(a\le Y\le b)=\mathbb P\left(\dfrac{a-10}3\le\dfrac{Y-10}3\le\dfrac{b-10}3\right)=\mathbb P(a^*\le Z\le b^*)

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8 0
3 years ago
Suppose a bag contains 4 white chips and 6 black chips. What is the probability of randomly choosing a white chip, not replacing
Marysya12 [62]
There are 10 chips altogether. 4 of them are white.
4/10 is the chance of lifting out a white chip
There are 3 of them left and 9 chips altogehter.
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2/15

Comment
(my edit) it is not that 2/15 is wrong (although it is not entirely right).
1/3 is the correct answer if you assume that what happened during the first draw has nothing to do with what will happen on the second. It is like saying if you throw 11 heads in a row with a fair coin, what are the chances of throwing a heads on the 12th throw? The answer is 1/2. That is the same kind of question you have asked.

The two of us who have responded have really responded to what are the chances of drawing 2 white chips. The question really does not restrict us in a way that prevents us from saying that. I'll stick with
B <<<< answer
but I think it would be nice if the writer of the question made it clear that 1/3 should be the proper answer. I am glad you came back and posted the right answer. It makes me think. 

The semi right answer is B <<<<---- 

If my reasoning bothers anybody, I'll reedit again. I'm only leaving it because sometimes a mistake is more instructive than a given answer.
5 0
3 years ago
Read 2 more answers
How do you show the work ? help
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Write a division problem with as the dividend and 3 as the divisor. Then, find the quotient.
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Step-by-step explanation:

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12 ÷ 3. The quotient is 4.

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