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2 years ago

15

HELP PLSSSS I WILL GIVE A BRAINLY AND 20 POINTS!!

1 answer:

Lubov Fominskaja [6]2 years ago

7 0

Answer:

y=x-4 or f(x)=x-4

Step-by-step explanation:

therefore, x=1 ,y=-3; x=2, y=-2 ; etc

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The equation shows the relationship between a planet’s orbital period, T, and the planet’s mean distance from the sun, A, in ast

Oxana [17]

Answer:

The equation shows the relationship between a planet’s orbital period, T, and the planet’s mean distance from the sun, A, in astronomical units, AU. If planet Y is twice the mean distance from the sun as planet X, by what factor is the orbital period increased?

Step-by-step explanation:

6 0

3 years ago

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If B = {0, { 1,2} }, find all subsets of B.

kotegsom [21]

Answer: If i'm correct i think the subsets of b are

={0},{1},{2},{0,1},{1,2} ,{2,0},{0,1,2},{phye}

Step-by-step explanation:

8 0

1 year ago

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A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Houston. The stud

iris [78.8K]

Answer:

$-0.048$

Do not reject $H_0:P_1-P_2=0$

Step-by-step explanation:

From the question we are told that

Sample size $n_1=350$

Sample size $n_2=250$

Sample proportion 1 $\hat P= \frac{25}{350} =>0.07$

Sample proportion 2 $\hat P= \frac{19}{250} =>0.076$

95% confidence interval

Generally for 95% confidence level

Level of significance

$\alpha = 1-0.95=>0.05$

$\alpha /2=\frac{0.05}{2} =>0.025$

Therefore

$Z_a_/_2=1.96$

Generally the equation for confidence interval between $P_1 - P_2$ is mathematically given as

$(\hat P_1-\hat P_2)\pm Z_a_/_2\sqrt{\frac{\hat P_1(1-\hat P_1)}{n_1}+\frac{\hat P_2(1-\hat P_2)}{n_2} }$

$(0.07-0.076)\pm 1.96\sqrt{\frac{0.07(1-0.07)}{350}+\frac{0.076(1-0.076)}{250} }$

$(0.07-0.076)\pm 1.96\sqrt{4.66896*10^-^4 }$

$(-0.006)\pm 0.042$

$(-0.006)- 0.042=>-0.048$

$(-0.006)+ 0.042=>0.036$

Therefore

Confidence interval is

$-0.048$

Conclusion

Given the confidence interval has zero

Therefore do not reject $H_0:P_1-P_2=0$

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2 years ago

Find the area of a circle whose radius is<br> 52 km. Round to nearest tenth

goblinko [34]

Answer:

8494.87 is the actual answer but the rounded version is 8494.9

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2 years ago

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I need the answer for one and two and you get that from the steps

Zinaida [17]

I hope you enjoy this explanation

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3 years ago