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3 years ago

Determine the next number in the following sequence. Explain your reasoning. Please tell me what expression you used.

Mathematics

1 answer:

Fittoniya [83]3 years ago

4 0

30 because after 21 it goes up by 9

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A botanist uses the representations below to show the heights in inches, h, of different plants over a period of time, t. Plant

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Answer:

Step-by-step explanation:

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3 years ago

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1.) 5 yards =_____ feet

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Which fraction is equivalent to 0.3636?

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The answer is0.4/1.0.good luck

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4 years ago

A survey of households in a small town showed that in 850 of 1,200 sampled households, at least one member attended a town meeti

Iteru [2.4K]

Answer:

Hence the confidence interval is ( 0.6745, 0.7422).

Step-by-step explanation:

Now the given are

Sample size = n = 1200

x = 850

Sample proportion is

$\hat{p}=\frac{x}{n}=\frac{850}{1200}=0.7083$

We have to construct 99% confidence interval for the population proportion.

Formula Used:

$(\hat{p}-E , \hat{p}+E)$

Here E is a margin of error.

$E =Zc\times\sqrt{\frac{\hat{p}(1-\hat{p})}{n}}$

Zc = 2.58

$E =2.58\times\sqrt{\frac{0.7083*(1-0.7083)}{1200}}\\\\E=2.58\times\sqrt{0.000172}=0.0339$

So confidence interval is ( 0.7083 - 0.0339 , 0.7083 + 0.0339)

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3 years ago

28 and/or 29 pls. Find the value of x and y.

djyliett [7]

Answer:

Step-by-step explanation:

for y

take 30 degree as reference angle using sin rule

sin 30=opposite/hypotenuse

1/2=9/y (do cross multiplication)

2*9=y

18=y

for x

using pythagoras theorem

a^2+b^2=c^2

9^2+x^2=18^2

81+x^2=324

x^2=324-81

x^2=243

x= $\sqrt{243$

x=9 $\sqrt{3$

7 0

3 years ago