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Ksju [112]
3 years ago
15

Simplify the following expression using only positive exponents. Help please!? It has to be only positive exponents the -9/7t an

swer will not work

Mathematics
1 answer:
wlad13 [49]3 years ago
8 0
(-9t^25) / (7t^26) = -9 / (7t)

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The smaller batch is 2/3 of the large batch so anser is2/5

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3 years ago
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A data set includes 108 body temperatures of healthy adult humans having a mean of 98.3degrees°F and a standard deviation of 0.6
mylen [45]
<h2>Answer with explanation:</h2>

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n=106

Sample mean : \overline{x}=98.3^{\circ}\ F

Standard deviation : \sigma= 0.69^{\circ}F

Significance level : \alpha: 1-0.99=0.01

Critical value : z_{\alpha/2}=2.576

Then , 99​% confidence interval estimate of the mean body temperature of all healthy humans will be :-

98.3\pm (2.576)\dfrac{0.69}{\sqrt{106}}\\\\\approx98.3\pm0.173=(98.3-0.173,\ 98.3+0.173)=(98.127,\ 98.473)

Since 98.6 is higher than the upper limit of the confidence interval (98.473), then this suggest that the mean body temperature could be lower then 98.6 degrees.

The best estimate of population mean is always the sample mean. \mu=\overline{x}=98.3^{\circ}\ F

7 0
3 years ago
Can somebody please help me with this
pickupchik [31]

Answer:

13.35

Step-by-step explanation:

you multiply 89 times 15

then divide that with 100

6 0
2 years ago
If $40 equals 15 gallons, how much money is in 3 gallos? this is due soon pls help
kiruha [24]

Answer:

$8

Step-by-step explanation:

$40:15 gallons

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>:3 gallons

So first you say what did you do to 15 to get three?

15÷3= 5

Now you divide forty by five since that is what you did to 15 to get three.

40÷5= 8

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3 years ago
Anne has three more dollars than Freddy. Together they have $99. How many dollars does each have?
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Anne has 51. Freddy has 48.
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3 years ago
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