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3 years ago

PLEASE HELP ASAPPP!!!!!

Mathematics

2 answers:

ddd [48]3 years ago

4 0

Uhhh use so carson in

9966 [12]3 years ago

3 0

Answer: 10 in

Step-by-step explanation:

8 in/32 ft = xin / 40 ft

40(8)/32 = 10 in

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The area of the circle above is 1,519.76 units squared. what is the circumference

murzikaleks [220]

In order to find the circumference, we first need to find the radius. We have the area, so we can find the radius. We set up this equation:

$1519.76= \pi r^{2}$

We begin by dividing both sides by pi.

483.76 = $r^{2}$

Next, we take the square root of both sides to get the radius.

r = 22.

Next, we plug this into the formula for the circumference, 2 pi r

$C = 2 \pi *22=138.23$

So, the circumference of this circle is 138.23 units.

5 0

4 years ago

the temperature of dry ice is -109.5°F this is 184.2°F less than the outside temperature. What is the outside temperature?

AlladinOne [14]

Answer:

Step-by-step explanation:

You need to add 184.2°F to -109.5°F.

184.2°F + (-109.5°F) =

= 184.2°F - 109.5°F

= 74.7°F

4 0

3 years ago

There are 50 bacteria in a test tube. After one hour, the number of bacteria is 100. After two hours, the number of bacteria is

r-ruslan [8.4K]

I think its n(50 x 2)

7 0

3 years ago

Read 2 more answers

Assume that BK Call Center receives 2 phone calls in one hour on average. If the department works 10 hours a day receiving the c

MrMuchimi

Using the Poisson distribution, the probabilities are given as follows:

A. 0.0888 = 8.88%.

B. 0.1354 = 13.54%.

C. 0.8646 = 86.46%.

<h3>What is the Poisson distribution?</h3>

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by:

$P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}$

The parameters are:

x is the number of successes

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

Item a:

10 hours, 2 calls per hour, hence the mean is given by:

$\mu = 2 \times 10 = 20$ .

The probability is P(X = 20), hence:

$P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}$

$P(X = 20) = \frac{e^{-20}20^{20}}{(20)!} = 0.0888$

Item b:

1 hour, hence the mean is given by:

$\mu = 2$

The probability is P(X = 0), hence:

$P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}$

$P(X = 0) = \frac{e^{-2}2^{0}}{(0)!} = 0.1354$

Item c:

The probability is:

$P(X \geq 1) = 1 - P(X = 0) = 1 - 0.1354 = 0.8646$

More can be learned about the Poisson distribution at brainly.com/question/13971530

#SPJ1

5 0

2 years ago

The bed of a truck is stacked with with boxes of paper. The boxes are stacked 5 boxes deep by 4 boxes high by 4 boxes across

marysya [2.9K]

Answer:

Step-by-step explanation:

The boxes are stacked 5 boxes deep by 4 boxes high by 4 boxes across, then there are $5\cdot 4\cdot 4=80$ boxes in total.

The mass of 1 box of paper is 22.5 kilograms, so 80 boxes weigh $22.5\cdot 80=1800$ kilograms.

When the driver is in the truck, the mass is 2948.35 kilograms, then the total mass is

$2948.35+1800=4748.35\ kg.$

Let n be the number of boxes of paper the driver must deliver at the first stop. Their weigth is 22.5n kg and the weight of the truck without n boxes is

$4748.35-22.5n\ kg.$

Trucks with a mass greater than 4700 kilograms are not allowed over the bridge, thus

$4748.35-22.5n48.35,\\ \\n>\dfrac{967}{450}=2\dfrac{67}{450}.$

Hence, the driver must deliver at least 3 boxes at the first shop.

8 0

3 years ago