3 years ago

Can someone please help

Mathematics

1 answer:

bezimeni [28]3 years ago

5 0

Answer:

6 I think

Step-by-step explanation:

add -1 for the x values

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Factor the expression x4 + 6x2 - 7<br> completely

lorasvet [3.4K]

Answer:

16x-7

Step-by-step explanation:

4x+12x-7

=16x-7

4 0

3 years ago

Can I please have help on 3, 4 will mark brainiest thank you.

Rus_ich [418]

Answer:

3.coso el años y la :)

4.soy me nuevo los derechos-

8 0

3 years ago

Question 6

babunello [35]

Answer:

$P(X=3)$

And using the probability mass function we got:

$P(X=3)= (12C3)(\frac{1}{6})^3 (1-\frac{1}{6})^{12-3}=0.1974$

Step-by-step explanation:

Let X the random variable of interest "number of times that 6 appears", on this case we now that:

$X \sim Binom(n=12, p=1/6)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find this probability:

$P(X=3)$

And using the probability mass function we got:

$P(X=3)= (12C3)(\frac{1}{6})^3 (1-\frac{1}{6})^{12-3}=0.1974$

5 0

3 years ago

5. The length of a rectangle is 8 cm more than four times the width. If the perimeter of the rectangle is 86 cm,

ivolga24 [154]

A) 86 x 4= Width (86x4)+8= Length
b) Width = 384, 384+8= 392. Length= 392

4 0

3 years ago

Is this right? 20 points if you help me PLEASE I NEED IT ASAP. CORRECT ME IF IM WRONG!!

Flauer [41]

Answer:

correct

Step-by-step explanation:

4 0

3 years ago