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2 years ago

Solve my cousins hw please asapppo

Mathematics

2 answers:

ss7ja [257]2 years ago

8 0

Answer:

8.6

Step-by-step explanation:

fomenos2 years ago

7 0

Answer:

The TV weighs 8.6 more pounds than the picnic basket.

Exlpanaition:

Just subtract 11.4 lbs from 20lbs and that's your answer.

hope this helps :)

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A pie is 3/4 and 2/3 of the pie is eaten what is left

Sidana [21]

Answer:
1/12 is left

Step by step explanation:
Find the common denominator which is 12 then you would get 9/12 (Originally 3/4) and 8/12 (Originally 2/3) and then you subtract which gets you 1/12

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2 years ago

Please help I don't know what to do ⬇<br><br>Find the value of x + 7 when x = 14

ella [17]

Answer:

Step-by-step explanation:

14+7=21

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2 years ago

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Rewrite 22/9 as a mixed number

saveliy_v [14]

Answer:

the mixed fraction is 2 4/9

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2 years ago

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You drive your car 720 miles in 20 hours. What is your speed? (mph)

liberstina [14]

Answer:

Your average speed was 36.0 Miles per hour (mph)

Step-by-step explanation:

Divide -> 720 by 20

720/20=36.0

6 0

2 years ago

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A researcher is interested in estimating the difference in two population proportions. A sample of 400 from each population resu

sergey [27]

Answer: (-0.086, 0.026)

Step-by-step explanation:

The confidence interval for the difference of two population proportion is given by :-

$p_1-p_2\pm\ z_{\alpha/2}\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}$

Given : Significance level : $\alpha: 1-0.90=0.10$

Critical value : $z_{\alpha/2}=1.645$

Sample size : $n_1=400,\ n_2=400$

$p_1=0.61,\ p_2=0.64$

The 90% confidence interval for the difference in the population proportions will be :-

$0.61-0.64\pm\ (1.645)\sqrt{\dfrac{0.61(1-0.61)}{400}+\dfrac{0.64(1-0.64)}{400}}\\\\\approx-0.03\pm0.056=(-0.03-0.056,-0.03+0.056)\\\\=(-0.086, 0.026)$

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3 years ago