3 years ago

(x+y) ²+(x-y)²+(x+y)*(x-y)

Mathematics

1 answer:

goldfiish [28.3K]3 years ago

8 0

3x^2+y^2
That’s the answer so you should be good!!!

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A data set has a mean of x = 71 and a standard deviation of 11.6. Find the z-score for each of the following.

olchik [2.2K]

Answer:

WHY MUST I CRYYYYY

Step-by-step explanation:

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2 years ago

Here is a quote from an NPR news article: "On average, working-age adults were eating about 78 fewer calories per day in 2010, c

s2008m [1.1K]

Answer:

The answer is "Option d".

Step-by-step explanation:

It involves the use of quantitative templates, diagrams, or summaries in such a given set of experimental data or real-liability for research. This research method is used for gathering, analyzing, assessing, or making judgments.

The statistics are mostly a summary description and the entire nation is represented in a parameter.
It is 78 figure is a statistical figure based on a survey of 10,000 people, that's why choice d is correct.

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3 years ago

Assume that when adults with smartphones are randomly selected,41 % use them in meetings or classes. If 5 adult smartphone use

kotegsom [21]

Answer:

0.345

Step-by-step explanation:

Use binomial probability:

P = nCr pʳ qⁿ⁻ʳ

where n is the number of trials,

r is the number of successes,

p is the probability of success,

and q is the probability of failure (1−p).

n = 5, r = 2, p = 0.41, and q = 0.59.

P = ₅C₂ (0.41)² (0.59)⁵⁻²

P = 0.345

3 0

3 years ago

Зn - 3 = 4n + 1 step by step

JulsSmile [24]

Answer: n = -4

3n - 3 = 4n + 1

Add 3 to both sides

3n = 4n + 4

Subtract 4n from both sides

-n = 4

Divide by -1 on both sides

n = -4

8 0

3 years ago

Read 2 more answers

4x - 1 2. = x + 7 Can someone help please?

tatiyna

Answer:

6 $\frac{1}{3}$

Step-by-step explanation:

4x-12 = x+7

4x-12+12 = x+7+12

4x = x+19

4x-x = x+19-x

3x=19

x = 6 $\frac{1}{3}$

And if we substitute the value of x into the equation 4x-12 = x+7,

we will get 13 $\frac{1}{3}$ = 13 $\frac{1}{3}$ in the end.

Hope this helps :)

3 0

3 years ago

Read 2 more answers

(x+y) ²+(x-y)²+(x+y)*(x-y)​

(x+y) ²+(x-y)²+(x+y)*(x-y)