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2 years ago

F(x)=-x^(2)-2x-5 , -5

Mathematics

1 answer:

Lana71 [14]2 years ago

8 0

Step-by-step explanation:

Needs more detail unable to answer

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Please help

Katarina [22]

Answer:

Step-by-step explanation:

$\left \{ {{2x+3y=15} \atop {x-3y=3}} \right.$

4 0

1 year ago

Value for x? 11x - 4 = 4x + 10

AlladinOne [14]

Answer:x is equal to 2. Hope this is helpful

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.917 g and a standard deviation

Nutka1998 [239]

Answer:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

Step-by-step explanation:

Let X the random variable that represent the amounts of nocatine of a population, and for this case we know the distribution for X is given by:

$X \sim N(0.917,0.303)$

Where $\mu=0.917$ and $\sigma=0.303$

We have the following info from a sample of n =37:

$\bar X= 0.872$ the sample mean

And we want to find the following probability:

$P(\bar X \leq 0.872)$

And we can use the z score formula given by;

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

And if we find the z score for the value of 0.872 we got:

$z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903$

And we can find this probability to find the answer:

$P(z$

And using the normal standar table or excel we got:

$P(z$

6 0

3 years ago

Find the difference for the subtraction 7.211- 5.24

Serhud [2]

Answer:

1.971

Step-by-step explanation:

7.211 - 5.24 = 1.971

4 0

2 years ago

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Triangle XYZ is rotated 90° counterclockwise about the origin.

sergeinik [125]

Answer:

i think 42

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers