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emmainna [20.7K]
3 years ago
6

Plz solve this questionIts too much urgent​

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
3 0

Standard form of the polynomial is x^{7}-2 x^{6}-3 x^{5}+x^{2}+\sqrt{2} x+4.

Degree of the polynomial is 7.

Solution:

Given polynomial:

x^{7}-3 x^{5}+\sqrt{2} x+x^{2}-2 x^{6}+4

<u>To write this polynomial in standard form:</u>

x^{7}-3 x^{5}+\sqrt{2} x+x^{2}-2 x^{6}+4

Standard form of the polynomial is writing x from highest power to lowest power.

Therefore, standard form of the polynomial is

x^{7}-2 x^{6}-3 x^{5}+x^{2}+\sqrt{2} x+4

<u>Degree of the polynomial:</u>

The highest power of x in the polynomial is the degree of the polynomial.

Here, the highest power is 7.

Hence the degree of the polynomial is 7.

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Simplify the fraction
oksano4ka [1.4K]

Answer:

3/10

<em />

<em>Hope this helps!</em>

<em> Have a good day :)</em>

8 0
1 year ago
100% I don´t really understand this so plz help me
jeka94

Answer: I think it is greater than

Step-by-step explanation:

Because positive - negative = positive

6 0
3 years ago
Read 2 more answers
ANSWER THIS ASAP DONT SEND A FILE AT ALL !! I NEED THE ANSWER QUICK!!
Finger [1]

Answer:

-5,3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The U.S. Center for Disease Control reports that the mean life expectancy was 47.6 years for whites born in 1900 and 33.0 years
inn [45]

Answer:

b. The null and alternative hypothesis are:

H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2\neq 0

c. Student's t distribution, as it is a two-sample test for the difference between means.

d. Test statistic t = 5.42.

P-value = 0

e. They appear to be significantly different, as the sample data gives strong evidence that the difference is greater than 0.

Step-by-step explanation:

This is a hypothesis test for the difference between populations means.

The claim is that the mean life spans in the county is significantly different for whites and nonwhites.

Then, the null and alternative hypothesis are:

H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2\neq 0

The significance level is 0.05.

The sample 1 (white), of size n1=124 has a mean of 45.3 and a standard deviation of 12.7.

The sample 2 (non-white), of size n2=82 has a mean of 34.1 and a standard deviation of 15.6.

The difference between sample means is Md=11.2.

M_d=M_1-M_2=45.3-34.1=11.2

The estimated standard error of the difference between means is computed using the formula:

s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{12.7^2}{124}+\dfrac{15.6^2}{82}}\\\\\\s_{M_d}=\sqrt{1.301+2.968}=\sqrt{4.269}=2.066

Then, we can calculate the t-statistic as:

t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{11.2-0}{2.066}=\dfrac{11.2}{2.066}=5.42

The degrees of freedom for this test are:

df=n_1+n_2-2=124+82-2=204

This test is a two-tailed test, with 204 degrees of freedom and t=5.42, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=2\cdot P(t>5.42)=0.0000002

As the P-value (0.0000002) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the mean life spans in the county is significantly different for whites and nonwhites.

4 0
3 years ago
HELP ASAP , WILL GIVE MOST BRAINIEST
stepladder [879]

The pink is y>2x +4 and the purple is x+y\leq  6 . Have a great day!

4 0
3 years ago
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