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3 years ago

PLS HELP I’ve been trying to do this but I just can’t do it

Mathematics

2 answers:

Dmitrij [34]3 years ago

8 0

Answer:

the answer is 8:1 so 8/1

Step-by-step explanation:

Zarrin [17]3 years ago

7 0

Answer:

26/3

Step-by-step explanation:

6 cups flour

3/4 cup of sugar

ratio of flour to sugar is

(6 flower : 3/4 sugar) multiply both sides by 4

26 flower : 3 sugar

so the ratio is 26/3

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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

3 years ago

What is the Greatest common factor for -8X²+ 24

monitta

Answer:

Step-by-step explanation:

$- 8 {x}^{2} + 24 \\ = 8( - {x}^{2} + 3) \\$

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NeTakaya

Answer: 2.4 miles per hour

Step-by-step explanation: just do 7.2/3=2.4

or another way you could do this is do 2.4 x 3=7.2

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3 years ago

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jarptica [38.1K]

Answer:

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Step-by-step explanation:

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Answer : A

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