All categories

3 years ago

Robin purchased 3 1\2 ounces of whole wheat cereal for $1.40. What is the cost per ounce?

Mathematics

1 answer:

Natalka [10]3 years ago

8 0

The answer is 40 cents

You might be interested in

What's 2.5 divided by 5

USPshnik [31]

Your answer would be 0.5 ;) Hope this helps

3 0

3 years ago

A laundry basket has 24-shirts in it. Four are navy, 12 are red, and the remaining are white. What is the probability of not sel

Ilya [14]

Answer:

The fraction white is one third.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

24 is 120% of what number?

laiz [17]

120÷100= 1.2
24÷1.2= 20
24 is 120% of 20

4 0

3 years ago

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

A circle has an area of 9. What is the circumference?

Len [333]

The circumference of the circle is 10.36

7 0

3 years ago