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Alekssandra [29.7K]
3 years ago
6

Write an algebraic expression for the perimeter of the swimming pool

Mathematics
1 answer:
Pachacha [2.7K]3 years ago
6 0

Answer: I don't see that you have a diagram of the swimming pool or any given side measures but assuming it is a rectangle, the algebraic expression would be 2(L+W) where L is the length and W is the width.

Step-by-Step Explanation: So when you are finding the perimeter, you are finding the length of the space surrounding something. So you would add up the length of all its sides to find it. In a rectangle, opposite sides are equal, therefore the length will be equal to the side opposite to it and the width will also be equal to the side opposite to it. So if you were to write the expression like that, you would get L+L+W+W, which can be simplified to 2L+2W, or just 2(L+W).

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An um contains 1 red marble, 7 white marbles and 2 blue marbles. A player randomly
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Answer:

A loss of 1.8$

Step-by-step explanation:

In the bag in this problem, we have:

r = 1 (number of red marbles)

w = 7 (number of white marbles)

b = 2 (number of blue marbles)

n = r + w + b = 1 + 7 + 2 = 10 (number of total marbles)

So, the probabilities of choosing a red, a white or a blue marble are:

p(r) = \frac{r}{n}=\frac{1}{10}=0.1 (probability of choosing a red marble)

p(w)=\frac{w}{n}=\frac{7}{10}=0.7 (probability of choosing a white marble)

p(b) = \frac{b}{n}=\frac{2}{10}=0.2 (probability of choosing a blue marble)

The winning associated to each probability are:

+$5 if the marble is red

-$3 if the marble  is white

-$1 if the marble is blue

So the expected winning can be calculated as follows:

E(X)=p(r) \cdot (+\$5)+p(w) \cdot (-\$3) +p(b)\cdot (-\$1)=\\=(0.1)(+5)+(0.7)(-3)+(0.2)(-1)=-\$1.8

So, he can expect a loss of 1.8$.

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The value of g(-3) is
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Answer:

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Step-by-step explanation:

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Find f(-5) if f(x) = X + 11.
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Answer:

f(-5) = 6

Step-by-step explanation:

f(x) = x + 11

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Answer:

Step-by-step explanation:

A∩B = 4

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Read 2 more answers
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