1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Wittaler [7]
3 years ago
8

NEED THE CORRECT ANSWER ASAP, PLEASE HELP!!! Drag and drop the expressions into the boxes to correctly complete the proof of the

polynomial identity.
(x2+y2)2+2x2y2−y4=x2(x2+4y2)

Mathematics
1 answer:
belka [17]3 years ago
4 0

Answer:

See attached

Step-by-step explanation:

The proof is attached

You might be interested in
Researchers at the National Cancer Institute released the results of a study that investigated the effect of weed-killing herbic
jolli1 [7]

Answer:

The 95% confidence interval for the difference in the proportion of cancer diagnoses between the two groups is (0.3834, 0.5166).

Step-by-step explanation:

Before building the confidence interval, we need to understand the central limit theorem and subtraction between normal variables.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

The randomly sampled 400 dogs from homes where an herbicide was used on a regular basis, diagnosing lymphoma in 230 of them.

This means that:

p_h = \frac{230}{400} = 0.575, s_h = \sqrt{\frac{0.575*0.425}{400}} = 0.0247

Of 200 dogs randomly sampled from homes where no herbicides were used, only 25 were found to have lymphoma.

This means that:

p_n = \frac{25}{200} = 0.125, s_n = \sqrt{\frac{0.125*0.875}{200}} = 0.0234

Distribution of the difference:

p = p_h - p_n = 0.575 - 0.125 = 0.45

s = \sqrt{s_h^2+s_n^2} = \sqrt{0.0247^2 + 0.0234^2} = 0.034

Confidence interval:

The confidence interval is:

p \pm zs

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower bound is 0.45 - 1.96(0.034) = 0.3834

The upper bound is 0.45 + 1.96(0.034) = 0.5166

The 95% confidence interval for the difference in the proportion of cancer diagnoses between the two groups is (0.3834, 0.5166).

3 0
3 years ago
Can someone please help me with this? It's the only question I need help with (since we are reviewing things that we learned in
BartSMP [9]

Answer: 18 mega rolls

Step-by-step explanation:                      

8 0
3 years ago
Read 2 more answers
What is 3 to the powers of 5
My name is Ann [436]

Answer:

3 to the power of 5 = 35 = 243

Step-by-step explanation:

4 0
3 years ago
The average THC content of marijuana sold on the street is 11%. Suppose the THC content is normally distributed with standard de
zloy xaker [14]

Answer:

:(

Step-by-step explanation:

I am soo Sorry, its too hard

6 0
2 years ago
Write an equation for the following real life scenario.
mojhsa [17]

Answer:

1/2x = 16

x = 32

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Solve the system of equations: 2x y=6 3x-7y=9
    11·1 answer
  • Complete the following statement. Write
    13·1 answer
  • A computer's hard disk drive holds 80000000 bytes of information. If Jill buys an extra memory stick that holds 30000000 bytes o
    9·1 answer
  • What is 3 * 2 1/3? A. 7 B. 6 1/3 C. 6 D. 5 1/3
    15·1 answer
  • You have botles of water how many can you buy with a 20$ and a bottle is 1.25​
    15·1 answer
  • Yx(y+1) + 4x(y + 1) - 5(y + 1) factor
    5·1 answer
  • {(-2,5),(-3, 8), 5,7), (-6, 4), (0, 1)}<br> is it a function?
    8·1 answer
  • Which triangles could not be similar to triangle ABC ? triangle a b c with right angle b. side a b is 12 cm. side b c is 5 cm. s
    14·1 answer
  • 3ab+4ab^3 I really need help please help meeeee!!!!
    12·1 answer
  • Triangle ABC is a right triangle and cos(22.6o)=StartFraction b Over 13 EndFraction. Solve for b and round to the nearest whole
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!