Answer:
13/20 Hours
Step-by-step explanation:
you have to find a common denominator. (20) You do 4x5 and 5x4 both equal 20. Then you do 1x5=5 and 2x4=8 then 8+5=13 then you make your fraction which is 13/20.
209 rounded to the nearest ten; 210
209 rounded to the nearest hundred; 200
Hope this helped ;)
Critical values are basically cut-off values that indicate regions where the test statistic is unlikely to lie. The required critical value is 1.31.
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What are critical Values?</h3>
Critical values are basically cut-off values that indicate regions where the test statistic is unlikely to lie; for example, if the null hypothesis is true, the critical value is surpassed with probability alpha.
The value of α can be written as,
α = 1 - 0.81 = 0.19
Now, using the z-table the value of z will be,
z = 1.31
Hence, the required critical value is 1.31.
Learn more about Critical Values:
brainly.com/question/14508634
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Step-by-step explanation:
Answer:
dA/dt = 12 - 0.03A.
Step-by-step explanation:
The rate at which the toxin is taken in or ingested throughout the day Increases by 12 micrograms a day.
The rate at which the toxin is taken out throughout the day decrease by 3 percent that is 0.03.
The differential equation for the amount of toxin, A, in micrograms, in the person's body as a function of the number of days, t = dA/dt.
The rate at which the toxin is taken in or ingested makes dA/dt more positive.
The rate at which the toxin is taken out throughout the day makes dA/dt more negative.
Therefore, dA/dt = (rate at which the toxin is taken in or ingested) - ( The rate at which the toxin is taken out throughout the day).
Hence, dA/dt = 12 - 0.03A
