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scoundrel [369]
3 years ago
7

Must use scientific notation to answer this qestion thanks and fo you best​

Mathematics
1 answer:
Brums [2.3K]3 years ago
5 0

Answer:

3  × 10¹⁹ kg

Step-by-step explanation:

\text{Mass of water} = 5.9726 \times 10^{ 24}\text{ kg Earth } \times \dfrac{5 \times 10^{-4}\text{ kg water }}{\text{100 kg Earth}} = \mathbf{3 \times 10^{19}}\textbf{ kg water}

The answer can have only one significant figure, because you estimated the percent of water to only one significant figure.

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The First National Bank of Wilson has 600 checking account customers. Recent sample of 50 of these customers show 29 have a visa
uranmaximum [27]

Answer:

0.58 - 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.466

0.58 + 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.694

The 90% confidence interval would be given by (0.466;0.694)

Step-by-step explanation:

The estimated proportion of interest would be:

\hat p=\frac{29}{50}= 0.58

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by \alpha=1-0.90=0.1 and \alpha/2 =0.05. And the critical value would be given by:

z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

If we replace the values obtained we got:

0.58 - 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.466

0.58 + 1.64\sqrt{\frac{0.58(1-0.58)}{50}}=0.694

The 90% confidence interval would be given by (0.466;0.694)

4 0
4 years ago
Order 0.709, 0.710, 0.79, and 0.079 from smallest to largest. Question 12 options:
AlekseyPX

Answer:

The order is 0.079, 0.709, 0.710, 0.79

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
If he starts at 1 and jumps 3 units to the right, then where is he on the number line? How far away from zero is he?
Ilya [14]

Answer:

If you mean he starts at 1 on the Y axis (vertical line), then the answer is (1, 3). If you mean he starts at 1 on the X axis (horizontal line), then the answer is (0, 4)

3 0
3 years ago
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What is a vesting period?
aleksley [76]

Answer:

A vesting period is the time an employee must work for an employer in order to own outright employee stock options, shares of company stock or employer contributions to a tax-advantaged retirement plan.

3 0
3 years ago
The sum of three consecutive even integers is 36. let x represent the least consecutive integer. i really need help ;-; 1.) what
Sliva [168]
Anytime you have text problem you need to write equation just read text bit by bit and write equation as you are reading text!

It starts with "the sum" which means we are using + to sum some numbers.
Next is "three". which means we are summing some 3 numbers.
Next is" consecutive even integers" for that you need to know if 4 is one number than next consecutive even number is 6 or 4+2.
And all is equal to 36.
which means we write:
x + (x+2) + (x+4) = 36  where x is least of those numbers.

3x + 6 = 36
3x = 30
x = 10.

Least consecutive even integer in this task is 10.
8 0
4 years ago
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