3 years ago

Sean has 1/5 of a cupcake and 1/5 of a large cake. Are they the same?

1 answer:

6 0

I think its a yes because 1\5 is 1\5 since it doesn't give u the exact measurements for the large cake and cupcake.
i think thats right

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Which rule describes the transformation? picture below

pochemuha

Answer:

Rotation

Step-by-step explanation:

The figure appears to have been rotated 180 degrees about the origin.

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3 years ago

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A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student

Butoxors [25]

Answer: $(21.541,\ 23.059)$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n=240$ , which is a large sample , so we apply z-test .

Sample mean : $\overline{x}=22.3$

Standard deviation : $\sigma= 6$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.960$

Now, a confidence interval at the 95% level of confidence will be :-

$22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)$

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3 years ago

Do 5/7 and 30/42 form a proportion

GREYUIT [131]

5/7
6*5/6*7
30/42

30/42 = 30/42

Yes, 5/7 and 30/42 form a proportion.

4 0

3 years ago

NEED HELP ASAP!!

Kaylis [27]

Answer:

20²+21² = x²

841= x²

x= 29

nearest tenth = 30

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2 years ago

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You have a bag of chocolate candy. Ten of them are red, 7 are brown, 12 are green, and 9 are blue. What is the probability that

Brrunno [24]

It would be $\frac{10}{38}$ , or, in simplest form, $\frac{5}{19}$ .

You get this by adding all the marbles to find the total number of marbles. 10+7+12+9, which equals 38.

You have 10 red marbles out of 38 total, so that is represented by $\frac{10}{38}$ !

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2 years ago

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