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3 years ago

Please answer this question

Mathematics

2 answers:

PolarNik [594]3 years ago

6 0

Answer:

$9$

Step-by-step explanation:

$(-1)^4-(-1)^3+(-1)^2+6$

$1-(-1)+1+6$

$1+1+1+6$

$3+6=9$

kotegsom [21]3 years ago

6 0

Answer:

Option 2

Step-by-step explanation:

p(t) = $t^4-t^3+t^2+6$

<u><em>Putting t = -1</em></u>

p(-1) = (-1)⁴-(-1)³+(-1)²+6

p(-1) = 1-(-1)+1+6

p(-1) = 1+1+7

p(-1) = 9

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Find the midpoint of the line segment shown below.

a_sh-v [17]

Answer:

(-3,-1.5)

Step-by-step explanation:

The two points are: (-2,1) & (-4,-4)

$x = \frac{ - 2 - 4}{2} = - 3 \\ \\ y = \frac{1 - 4}{2 } = - \frac{3}{2} = - 1.5$

3 0

3 years ago

Idk how to do this I’m stuck and don’t know what to do it’s due today can someone give me the answers

wel

A: When they were distributing the 2, they didn’t distribute it to the 5. The correct answer would be 6x + 10

B: They didn’t distribute the 3 to the -3. The answer should be 6x^2 - 9

C: They didn’t distribute the -3 to the -4. The correct answer should be -9x + 12

D: The -20 should be a positive 20 because -4 x -5= 20. The correct answer should be -16x + 20

E: The 12 should be a -12 because -2 x 6= -12. The correct answer should be -8x^2 -12

F: They didn’t distribute the -9 correctly. The correct answer should be -36x^3 + 45x -54

Hope this helps!

-Grace

7 0

3 years ago

A population is estimated to have a standard deviation of 9. We want to estimate the population mean within 2, with a 99% level

cupoosta [38]

Answer:

The sample required is $n = 135$

Step-by-step explanation:

From the question we are told that

The standard deviation is $\sigma = 9$

The margin of error is $E = 2$

Given that the confidence level is 99% then the level of significance is mathematically evaluated as

$\alpha = 100-99$

$\alpha = 1 \%$

$\alpha = 0.01$

Next we will obtain the critical value $\frac{\alpha }{2}$ from the normal distribution table(reference math dot armstrong dot edu) , the value is

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.05 }{2} } = 2.58$

The sample size is mathematically represented as

$n = [ \frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ]^2$

substituting values

$n = [ \frac{ 2.58 * 9 }{2} ]^2$

$n = 135$

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3 years ago

eremy loves movies. He likes to watch movies and someday he hopes to make one of his own. He likes to ask questions about movies

IrinaVladis [17]

One movie-related statistical question would be the length of people's favorite movies (in minutes). This would contain variability since people would have different favorite movies, which would have different lengths.
One movie-related question that does not yield variability is the number of movies released in 2018 that grossed more than $100 million. This would be a fixed fact, so there is no variability about this.

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3 years ago

Johnny's mother has 3 children. The first child is named April. The second child is named May. What is the third child's name

Musya8 [376]

The answer is Johnny. You can conclude from the first sentence of your question. It is stating that Johnny's mother has three children. Johnny is included in the three children. So, the third child's name was Johnny!
Thank you! :D

3 0

3 years ago