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3 years ago

I need help on finding the scientific notation for number 1

Mathematics

1 answer:

natita [175]3 years ago

4 0

1. Total area of water = 352,000,000 + 9 * 10^6

= 352,000,000 + 9,000,000 = 361,000,000 = 3.61 * 10^8

Fraction of the surface covered by water = 3.61 * 10^8 / 5.1 * 10^8

= 3.61 / 5.1 = 0.707843 = 70.78 % to nearest hundredth of a percent.

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What is 4.02x9= please help me

Readme [11.4K]

4.02x9=36.18 that's the answer

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3 years ago

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The industrial and agricultural revolutions resulted in a decline in __________.

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The answer is <span>subsistence farming you welcome </span>

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3 years ago

O Mr. Math S. Fun is looking for his missing pair of

dalvyx [7]

Answer:

1/3

Step-by-step explanation:

add all of the totals including the missing pair

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2 years ago

According to a polling organization, 24% of adults in a large region consider themselves to be liberal. A survey asked 200 resp

Varvara68 [4.7K]

Answer:

$z=\frac{0.375 -0.24}{\sqrt{\frac{0.24(1-0.24)}{200}}}=4.47$

Now we can calculate the p value based on the alternative hypothesis with this probability:

$p_v =P(z>4.47)=0.00000391$

The p value is very low compared to the significance level of $\alpha=0.05$ then we can reject the null hypothesis and we can conclude that the true proportion of people liberal is higher than 0.24

Step-by-step explanation:

Information given

n=200 represent the random sample taken

X=75 represent the number of people Liberal

$\hat p=\frac{75}{200}=0.375$ estimated proportion of people liberal

$p_o=0.24$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Hypothesis to test

We want to verify if the true proportion of adults liberal is higher than 0.24:

Null hypothesis: $p \leq 0.24$

Alternative hypothesis: $p > 0.24$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info given we got:

$z=\frac{0.375 -0.24}{\sqrt{\frac{0.24(1-0.24)}{200}}}=4.47$

Now we can calculate the p value based on the alternative hypothesis with this probability:

$p_v =P(z>4.47)=0.00000391$

The p value is very low compared to the significance level of $\alpha=0.05$ then we can reject the null hypothesis and we can conclude that the true proportion of people liberal is higher than 0.24

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3 years ago

93000000 in standard form

noname [10]

It’s already in standard form: 93,000,000

If we would put it in scientific notation though, it would be: 9.3 x10 ^7 (to the power of 7)

3 0

3 years ago