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3 years ago

18+45-9(2) Using order of operations

Mathematics

2 answers:

andrew-mc [135]3 years ago

7 0

Answer:

Step-by-step explanation:

liubo4ka [24]3 years ago

7 0

Answer:

Step-by-step explanation:

18 + 45 - 9(2)

PEM -> 18 + 45 - 18

AS -> 45 (18 and - 18 = 0)

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Challenge Yossi used to have a square garage with 246 ft of floor space. recently built an addition to it. The garage is still a

irina [24]

Considering the perimeter of a square, it is found that:

The length of one side of the garage originally was of 61.5 ft.

The length of one side of the garage now is of 92.25 ft.

The percent increase in the length of one side was of 50%.

<h3>What is the perimeter of a square?</h3>

The perimeter of a square of side length s is given by four times the length, that is:

P = 4s.

Before the change, the perimeter was of 246 ft, hence:

4s = 246

s = 246/4

s = 61.5.

The length of one side of the garage originally was of 61.5 ft.

After that, the perimeter increased by 50%, hence:

P = 246 x 1.5 = 369.

4s = 369

s = 369/4

s = 92.25.

The length of one side of the garage now is of 92.25 ft.

The percent increase is the increase divided by the initial value, hence:

(92.25 - 61.5)/61.5 = 50%.

The percent increase in the length of one side was of 50%.

More can be learned about the perimeter of a square at brainly.com/question/10489198
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1 year ago

Help, please giving 20 points

scZoUnD [109]

Answer:

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Step-by-step explanation:

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3 years ago

Children arrive at a house to do Halloween trick-or- treating according to a Poisson process at the unlucky rate of 13/hour. Wha

Art [367]

Answer:

0.4204 probability, option b.

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

$f(x) = \mu e^{-\mu x}$

In which $\mu = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

Children arrive at a house to do Halloween trick-or- treating according to a Poisson process at the unlucky rate of 13/hour

13 arrivals during an hour, which means that the mean time between arrivals, in minutes is of $\mu = \frac{13}{60} = 0.2167$

What is the probability that the time between the 15th and 16th arrivals will be more than 4 minutes ?

This is P(X > 4). So

$P(X > 4) = e^{-0.2167*4} = 0.4204$

So the correct answer is given by option b.

3 0

3 years ago