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vladimir2022 [97]
3 years ago
6

Prove that in general (x + a) 2 ≠ x2 + a2

Mathematics
1 answer:
qwelly [4]3 years ago
6 0

Answer:

yes they are not equal because (x + a) = 2x + 2a

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Liam is setting up folding chairs for a meeting. If he arranges the chairs in 6 rows of the same length, he
vladimir2022 [97]
We will need to have two equations here, having x as the missing length. We know that the chairs are in the same amount on each occasion, so each equation should be equal to the other.

This sets up a problem of:

6x + 7 = 4x + 13

7 and 13 being the leftover chairs and 6 and 4 being the rows. Let’s solve for x.

x = 3

Knowing this, we plug in x for one of the equations

6(3) + 7
18 + 7
25

Liam has 25 chairs.
7 0
2 years ago
Is 12.8 greater than 12.815?
Arturiano [62]

Answer:

No,

12.8 = 12.800

Obviously, 12.800 <u>< </u>12.815.

\infty  \infty

4 0
2 years ago
Read 2 more answers
The number of phone calls that Actuary Ben receives each day has a Poisson distribution with mean 0.1 during each weekday and me
Dovator [93]

Answer:

There is a 0.73% probability that Ben receives a total of 2 phone calls in a week.

Step-by-step explanation:

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

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

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given time interval.

The problem states that:

The number of phone calls that Actuary Ben receives each day has a Poisson distribution with mean 0.1 during each weekday and mean 0.2 each day during the weekend.

To find the mean during the time interval, we have to find the weighed mean of calls he receives per day.

There are 5 weekdays, with a mean of 0.1 calls per day.

The weekend is 2 days long, with a mean of 0.2 calls per day.

So:

\mu = \frac{5(0.1) + 2(0.2)}{7} = 0.1286

If today is Monday, what is the probability that Ben receives a total of 2 phone calls in a week?

This is P(X = 2). So:

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

P(X = 2) = \frac{e^{-0.1286}*0.1286^{2}}{(2)!} = 0.0073

There is a 0.73% probability that Ben receives a total of 2 phone calls in a week.

3 0
3 years ago
Write the following statement as expression 50 more than x​
spin [16.1K]

Answer:

What statement??? I don't see one to re-write.

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Hellppp I'm slowee don't know anything​
miss Akunina [59]

Answer:     B)  X=40

cuz i just know

5 0
3 years ago
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