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Dmitry [639]
3 years ago
9

Write 0.0002839 in scientific notation.

Mathematics
2 answers:
Anika [276]3 years ago
8 0

Answer:2.84 x 10-4

There you go!

san4es73 [151]3 years ago
5 0
Scientific Notation means it has to be between 1 and 10 .
Changing our number 0.0002839 to 2.839, moving 4 decimal places to the right.
Answer: 2.839x10-4 or 2.839E-4
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Please help thanks!!
Anna35 [415]

First divide both sides by 5. Then you get the answer. -0 or 0 I'm not sure tho


5 0
3 years ago
Read 2 more answers
An orchestra of 25 members bought tickets, at all different prices, to a concert, and the mean price paid was $82. A new musicia
AleksAgata [21]

Answer:

$82.3

Step-by-step explanation:

82x25=2050

2050+90=2140

2140/26=82.3

5 0
3 years ago
Solve for x: 2 over 5 plus 3 over 5 x equals quantity x plus 5 over 10
krok68 [10]
(2/5)+(3/(5x))=(x+5)/10
nasty fractions, we hates it forever

so

get rid of all those nasty fractions
multiply both sides by 10x
4x+6=x(x+5)
distribute
4x+6=x^2+5x
minus (4x+6) from both sides
0=x^2+x-6
factor
0=(x-2)(x+3)
set each to zero
0=x-2
2=x

0=x+3
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3rd option is answer
8 0
3 years ago
A researcher records the repair cost for 8 randomly selected washers. A sample mean of $60.46 and standard deviation of $18.36 a
Anuta_ua [19.1K]

Answer:

The critical value is T = 1.895.

The 90% confidence interval for the mean repair cost for the washers is between $48.159 and $72.761

Step-by-step explanation:

We have the standard deviation for the sample, so we use the t-distribution.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 8 - 1 = 6

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 6 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.895, which is the critical value.

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.895\frac{18.36}{\sqrt{8}} = 12.301

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 60.46 - 12.301 = $48.159

The upper end of the interval is the sample mean added to M. So it is 60.46 + 12.301 = $72.761

The 90% confidence interval for the mean repair cost for the washers is between $48.159 and $72.761

8 0
3 years ago
6 pounds of sugar for $3 how much per pound
nirvana33 [79]

Answer:

$0.5

Step-by-step explanation:

3/6 = 0.5

3 0
3 years ago
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