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3 years ago

Plz help me will give crown.

Mathematics

2 answers:

Contact [7]3 years ago

7 0

Answer:

1/3

Step-by-step explanation:

-4/15+3/5

-4/15+3×3/5×3

-4/15+9/15

-4+9/15

5/15

1/3

Hope this helps!

Darya [45]3 years ago

4 0

Answer:

1/3

Step-by-step explanation:

-4/15+3/5

-4/15+3×3/5×3

-4/15+9/15

-4+9/15

5/15

1/3

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Construct the 99% confidence interval estimate of the population proportion p if the sample size is n=900 and the number of succ

oee [108]

Answer:

An 99% confidence interval of the given proportion

(0.355 , 0.385)

Step-by-step explanation:

Given sample size n= 900

the number of successes in the sample is x=333

The proportion P = $\frac{x}{n} = \frac{333}{900} = 0.37$

Q = 1-P =1 - 0.37 = 0.63

<u>Confidence interval</u>:-

99% of confidence interval zα = 2.93

$(P - z_{\alpha } \sqrt{\frac{PQ}{n} } , P + z_{\alpha } \sqrt{\frac{PQ}{n} })$

$(0.37 - 2.93 \sqrt{\frac{0.37(0.63}{900} } ,0.37 +2.93 \sqrt{\frac{0.37(0.63}{900} } })$

(0.37 - 0.015 , 0.37 + 0.015)

(0.355 , 0.385)

<u>Conclusion</u>:-

<u>An 99% Confidence interval (0.355 , 0.385)</u>

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3 years ago

In math class, Sam said two different numbers can have the same absolute value. Is he right? Why or ehy not?

Luba_88 [7]

<h2>Answer:</h2><h2>Yes!.</h2><h2>If the domain is real number for each absolute value, there are two different one can have with same absolute value </h2>

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3 years ago

The second of two numbers is 4 times the first. Their sum is 50. What are the numbers?

WARRIOR [948]

Answer:

#1: 10

#2: 40

Step-by-step explanation:

If the sum is 50, you divide by 5, and you get 10. Then multiply that by 4 to get the 2nd number.

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3 years ago

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Step-by-step explanation:

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2 years ago