3 years ago

Select the numeral form of this number written in scientific notation. 5 × 10^3

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

7 0

$5 \times 10^3 = 5,000$

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2/3 divided 1/4 , give answers in simplest form

lina2011 [118]

Answer:

2 2/3

Step-by-step explanation:

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3 years ago

How do u make 3/4 in a mix number as a whole number or decimal?

KengaRu [80]

In decimal form it's .75 and that's all you can make it

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3 years ago

While working at the drugstore, Grace earns $9.83 per hours. How many hours will it take grace to earn $49.15?

RoseWind [281]

Answer:

Step-by-step explanation:

all you have to do is divide 49.15 by 9.83.

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3 years ago

I need the answer ASAP please

ANTONII [103]

Ok bare with me here.
I’m not sure if you filled in the minimum medium and max but I’m going to try and lay this out.
Min: 3
Q1: 7.5
Med: 9
Q2: 13
Max: 17

I hope this helps!! It should get you through the problem!

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3 years ago

A researcher takes a simple random sample of 83 homes in a city and finds that the mean square footage is 1628 with a standard d

Anna [14]

Answer: (1583.63, 1672.37)

Step-by-step explanation:

Given : Sample size : n= 83

Sample mean : $\overline{x}=1628$

Sample standard deviation : $\sigma=243$

The population standard deviation $(\sigma)$ is unknown .

The confidence interval for population mean :

$\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}$

For 90% confidence , significance level = $\alpha=1-0.90=0.10$

Using t-distribution table , Critical t-value = $t_{(\alpha/2, n-1)}=t_{0.05,82}=1.6636$

, where n-1 is the degree of freedom.

Now , 90% confidence interval for the mean square footage of all the homes in that city will be :-

$1628\pm (1.6636)\dfrac{243}{\sqrt{83}}\\\\ 1628\pm (1.6636)(26.672715)\\\\\\\\\approx1628\pm 44.37\\\\=(1628- 44.37,\ 1628+ 44.37)\\\\=(1583.63,\ 1672.37)$

Hence, the 90% confidence interval for the mean square footage of all the homes in that city = (1583.63, 1672.37)

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3 years ago