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2 years ago

Help me please thank you so much if you did

Mathematics

2 answers:

masya89 [10]2 years ago

8 0

Please give the person above brainlest, and I hope you have a great day! Happy holidays!

Gala2k [10]2 years ago

4 0

Answer:

I just answed this question today!Your asnwer is 144.

Step-by-step explanation:

1:5:3

48 total.

Divide 48 and get 16

<u>Multiply 16 x1</u>

<u>Multiply 16 x5</u>

<u>Multiply 16x 3</u>

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The manager wants to advertise that anybody who isn't served within a certain number of minutes gets a free hamburger. But she d

aksik [14]

Answer:

The number of minutes advertisement should use is found.

x ≅ 12 mins

Step-by-step explanation:

(MISSING PART OF THE QUESTION: AVERAGE WAITING TIME = 2.5 MINUTES)

For such problems, we can use probability density function, in which probability is found out by taking integral of a function across an interval.

Probability Density Function is given by:

$f(t)=\left \{ {{0 ,\-t$

Consider the second function:

$f(t)=\frac{e^{-t/\mu}}{\mu}\\$

Where Average waiting time = μ = 2.5

The function f(t) becomes

$f(t)=0.4e^{-0.4t}$

The manager wants to give free hamburgers to only 1% of her costumers, which means that probability of a costumer getting a free hamburger is 0.01

The probability that a costumer has to wait for more than x minutes is:

$\int\limits^\infty_x {f(t)} \, dt= \int\limits^\infty_x {}0.4e^{-0.4t}dt$

which is equal to 0.01

Solve the equation for x

$\int\limits^{\infty}_x {0.4e^{-0.4t}} \, dt =0.01\\\\\frac{0.4e^{-0.4t}}{-0.4}=0.01\\\\-e^{-0.4t} |^\infty_x =0.01\\\\e^{-0.4x}=0.01$

Take natural log on both sides

$ln (e^{-0.4x})=ln(0.01)\\-0.4x=ln(0.01)\\-0.4x=-4.61\\x= 11.53$

<h3>Results</h3>

The costumer has to wait x = 11.53 mins ≅ 12 mins to get a free hamburger

3 0

2 years ago

plz help quick. the sum of two numbers is 11. Three times the first number minus the second number is -3. what are the numbers?

Lerok [7]

Answer:

the first number is 2, the second number is 9 :)

Step-by-step explanation:

brainliest? :)

6 0

2 years ago

I need help on 11 plz I need a slot of help

Galina-37 [17]

mean = (sum of values) / (number of values)

we know mean is 13 and we are given 8 values. The ninth value is the missing x:

13 = ((sum of 8 values) + x)/9

13 = (12+10+15+12+13+15+11+15+x)/9

13*9 = 103+x

x = 14

The missing value is 14. There are 14 pillows in the last box.

8 0

2 years ago

All rectangles are parallelograms.<br> True<br> False

navik [9.2K]

Answer:

false

Step-by-step explanation:

Not all parallelograms are rectangles, only some of them are.

3 0

3 years ago

A 15% tip on a restaurant bill is $3.60. How much is the bill?

ale4655 [162]

Answer:

$3.60.

Step-by-step explanation:

If you want to tip 15%, then the total tip amount would be $2.40 plus half of that again ($1.20), which is $3.60.

7 0

2 years ago

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