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zloy xaker [14]
3 years ago
15

The probability that Sara wins a raffle is given by the expression n/n+3

Mathematics
1 answer:
aksik [14]3 years ago
5 0

Answer:

3/(n + 3)

Step-by-step explanation:

The given probability that Sara wins a raffle draw, P = n/(n + 3)

Given that the sum of all probabilities is 1, we get

The probability that Sara does not win, Q = 1 - P

Therefore;

Q = 1 - n/(n + 3) = (n + 3) - n/((n + 3) = 3/(n + 3)

The probability that Sara does not win, Q = 3/(n + 3)

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Thepotemich [5.8K]
Jeremy sold
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8 0
3 years ago
When the following expression is written in simplest form, what is the coefficient of the variable term?
arsen [322]
The coefficient is the number in front of y. Y is considered variable because any number could be substituted for y, so y it is not a constant number.

= -2.5y + 8y - 10.5y
combine like terms
= 5.5y - 10.5y
= -5y

ANSWER: A) -5

Hope this helps! :)
5 0
3 years ago
Someone please help explain how to find x
dimaraw [331]

Answer:

x=27

Step-by-step explanation:

180-2x-40+180-3x+180-x-50+180-4x = 360

360-2x-40-3x+360-x-50-4x= 360

360-10x-90= 0

10x= 270

x= 27

5 0
4 years ago
ANSWER AT YOUR OWN WILL THX!
matrenka [14]

Using proportions, it is found that:

a) A raise of $500 would be equivalent to a percentage of 80%.

b) From the above percentage, it would fall into the Gold Award range.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and equations can be built to find the desired measures in the problem using arithmetic operations such as multiplication and division.

One example of application of proportions is for percentage problems, as a percentage is given by the amount a divided by the total amount b, and multiplied by 100%.

The goal of the raise is of $625, hence b = 625, and considering a raise of $500, a = 500, hence the percentage of the raise is given as follows:

500/625 x 100% = 80%.

To find the range of the raise, we look at the table. For a percentage of 80%, the amount is a Gold Award contribution.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

8 0
1 year ago
Meryl needs to cut down 10.5 trees for every 5 cabins she builds. how many trees would she need to build 7 cabins​
Sidana [21]

Answer:

<h2>14.7 Trees</h2>

Step-by-step explanation:

We solve this using a proportion.

\frac{10.5}{5} = \frac{x}{7}

10.5 x 7 = 73.5

5x = 73.5

x = 14.7

Now let's check the proportion.

\frac{10.5}{5} = \frac{14.7}{7}

10.5 x 7 = 73.5

14.7 x 5 = 73.5

73.5 = 73.5 ✅

I'm always happy to help :)

4 0
4 years ago
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