Answer:
The answer to your question is: x = 7; y = 6
Step-by-step explanation:
2x+y=20 ( 1 ) Multiply by 5
6x−5y=12 ( 2 )
5 (2x+y=20) = 10x + 5y = 100
10x + 5y = 100
6x − 5y = 12 Eliminate y
16 x = 112
x = 112 / 16
x = 7
2(7) + y = 20 Substitution
14 + y = 20
y = 20 - 14
y = 6
Using the binomial distribution, there is a 0.0874 = 8.74% probability that not enough seats will be available.
<h3>What is the binomial distribution formula?</h3>
The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
For this problem, the values of the parameters are given by:
n = 15, p = 0.85.
The probability that not enough seats will be available is P(X = 15), as the only outcome in which not enough seats will be available is when all 15 people who bought the ticket show up, hence:
0.0874 = 8.74% probability that not enough seats will be available.
More can be learned about the binomial distribution at brainly.com/question/24863377
#SPJ1
1) we calculate the total cost of all items:
Total cost=27 * $1.25 + 5 *1.99$ + 1*1.5$=$33.75 + $9.95 + $1.5=$45.2
2)we express the total cost in cents:
$1=100 cents
$45.2=$45.2 * (100 cents /$1)=4520 cents.
3)we divide 4520 cents among the number of pupils
Each student will pay=4520 cents / 26 =173.84... cents≈174 cents.
Answer: Each student will pay 174 cents.
Answer:
Julie's bill came to $121 for the month in which she ordered 12 movies.
Step-by-step explanation:
Let x represent the number of movies ordered.
Julie: $70 + ($4.25/movie)x, and ...
Tim: $49.50 + ($5.50/movie)x
If Julie ordered 12 movies last month, then her bill came to
$70 + ($4.25/movie)(12 movies) = $70 + $51 = $121
Please be clearer about what you want here. Are you refering to Julie or to Tim or to both when you write, "an equation that best represents the amount of movies?"
Hey there Jefferymcdougl1,
Answer:
Brand X:
5 pounds = $43
1 pound = $43 / 5
= $8.60
Brand Y:
3 pounds = $27
1 pound = $27 / 3
= $9
Thus, Brand X is a better buy as Brand Y costs $0.40 more than Brand x
Hope this helps :D
<em>~Natasha♥</em>
