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3 years ago

What is 1,485÷ 0.09 answer please let me y

Mathematics

2 answers:

aleksklad [387]3 years ago

6 0

Answer:

16,500

Step-by-step explanation:

Just use a calculator-simple

What do you mean "let me y"?

Hoochie [10]3 years ago

5 0

Answer:

the answer is 16500 or sixteen thousand five hundred

Step-by-step explanation:

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gogolik [260]

They had 20:2 point problems. They also had 20:5 point problems.

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4 years ago

-(-(-)(-)(-10x))=-5 solve for x

Pavlova-9 [17]

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3 years ago

The service life of a battery used in a cardiac pacemaker is assumed to be normally distributed. A random sample of ten batterie

Fittoniya [83]

Answer:

The confidence interval is $25.16 < \mu < 26.85$

Step-by-step explanation:

From the question we are given a data set

25.5, 26.1, 26.8, 23.2, 24.2, 28.4, 25.0, 27.8, 27.3, and 25.7.

The mean of the this sample data is

$\= x = \frac{\sum x_i}{n}$

where is the sample size with values n = 10

$\= x = \frac{25.5+ 26.1+ 26.8+23.2+ 24.2+ 28.4+ 25.0+ 27.8+ 27.3+ 25.7}{10}$

$\= x = 26$

The standard deviation is evaluated as

$\sigma = \sqrt{\frac{\sum (x-\= x)}{n} }$

substituting values

$= \sqrt{\frac{ ( 25.5-26)^2, (26.1-26)^2, (26.8-26)^2, (23.2-26)^2}{10} }$

$\cdot \ \cdot \ \cdot \sqrt{\frac{ ( 24.2-26)^2, (28.4-26)^2+( 25.0-26)^2+ (27.8-26)^2+( 27.3-26)^2+( 25.7-26)^2}{10} }$

$\sigma = 1.625$

The confidence level is given as 90% hence the level of significance is calculated as

$\alpha = 100 -90$

$\alpha =10$ %

$\alpha = 0.10$

Now the critical values of $\frac{\alpha }{2}$ is obtained from the normal distribution table as

$Z_{\frac{\alpha }{2} } = 1.645$

The reason we are obtaining the critical values of $\frac{\alpha }{2}$ instead of $\alpha$ is because we are considering two tails of the area under the normal curve

The margin of error is evaluated as

$MOE = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

substituting values

$MOE = 1.645 * \frac{1.625 }{\sqrt{10} }$

$MOE = 0.845$

The 90%, two sided confidence interval is mathematically evaluated as

$\= x - MOE < \mu < \= x + MOE$

$26 - 0.845 < \mu < 26 + 0.845$

$25.16 < \mu < 26.85$

Given that the lower and the upper limit is greater than 25 then we can assure the manufactures that the battery life exceeds 25 hours

5 0

3 years ago

Solve for the missing variables. (Geometry)

Tcecarenko [31]

Answer: My guess is 15.5 = x

Step by step explanation:
2x + 21
Then divide 2 each side
X + 15.5

7 0

2 years ago

A BLOOD sample has about 5 times as many monocytes as basophils if there are 60 basophils in the sample about how many monocytes

Liono4ka [1.6K]

$\\
\text{Let the number of monocytes be M and number of basophils is B.}\\
\text{Now since a blood sample has about 5 times as many monocytes as basophils,}\\
\text{so in mathmatical notation, we can represent this situation as:}\\
\\
M=5\times B\\
\\
\text{Now the case when there are 60 basophils in the blood sample, }\\
\text{then the number of monocyles would be}\\
\\
M=5\times 60\\
\\
\Rightarrow M=300$

There would be about 300 monocytes in the blood sample.

8 0

4 years ago