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Ronch [10]
2 years ago
7

Hey People lol i need help the question is is 3+(-4) the same as -4+3? Explai PLEASE HELP ITS DUE TODAY SOON 0-0

Mathematics
2 answers:
Llana [10]2 years ago
7 0

yes it will be you are just rearranging the answer the numbers and signs are still the same

erma4kov [3.2K]2 years ago
7 0

This is using the commutative property of addition.  a + b = b + a, which means that you can add two numbers in any order.

3 + (-4) = (-4) + 3

Answer: YES

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Factor 9y2 - 12y + 4.<br><br> (3 y - 2)(3 y + 2)<br> (3 y - 4)( y + 1)<br> (3 y - 2) 2
lozanna [386]

Answer:

(y - 2)²

Step-by-step explanation:

9y² - 12y + 4 ← is a perfect square of the form

(ax - b)² = a²x² - 2abx + b²

Compare like terms with 9y² - 12y + 4, thus

a² = 9 ⇒ a = 3

b² = 4 ⇒ b = 2 and

- 2ab = - 2 × 3 × 2 = - 12

Thus

9y² - 12y + 4 = (3y - 2)²

8 0
3 years ago
The number of messages arriving at a multiplexer is a Poisson random variable with mean 15 messages/second. Use the central limi
Mila [183]

Answer:

0.048 is the probability that more than 950 message arrive in one minute.

Step-by-step explanation:

We are given the following information in the question:

The number of messages arriving at a multiplexer is a Poisson random variable with mean 15 messages/second.

Let X be the number of messages arriving at a multiplexer.

Mean = 15

For poison distribution,

Mean = Variance = 15

\text{Standard Deviation} = \sqrt{\text{Variance}} = \sqrt{15} = 3.872

From central limit theorem, we have:

z = \displaystyle\frac{x-n\mu}{\sigma\sqrt{n}}

where n is the sample size.

Here, n = 1 minute = 60 seconds

P(x > 950)

P( x > 950) = P( z > \displaystyle\frac{950 - (60)(15)}{\sqrt{(15)(60)}}) = P(z > 1.667)

= 1 - P(z \leq 1.667)

Calculation the value from standard normal z table, we have,  

P(x > 950) = 1 - 0.952 = 0.048

0.048 is the probability that more than 950 message arrive in one minute.

3 0
2 years ago
3c-7c+5d pls help me
IrinaK [193]

Answer:

-4c + 5d

Step-by-step explanation:

3 - 7 = -4, so c is equal to -4.

Since there is only one value for d, d stays the same as 5d.

3 0
2 years ago
For which values of x is the function
max2010maxim [7]

Answer:

x = - 5, x = - 11

Step-by-step explanation:

Given

y = \frac{x+4}{(x+5)(x+11)}

The denominator cannot be zero as this would make y undefined.

Equating the denominator to zero and solving gives the values that x cannot be, that is

(x + 5)(x + 11) = 0

Equate each factor to zero and solve for x

x + 5 = 0 ⇒ x = - 5

x + 11 = 0 ⇒ x = - 11

Thus

x = - 11 and x = - 5 are excluded values.

4 0
3 years ago
A van has room for 6students and 2teachers . How many vans are needed for a total of 48students and 16 teachers?
Juliette [100K]
8 vans are need for all to go
7 0
2 years ago
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