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nikitadnepr [17]
2 years ago
8

Pls do this thankuso much​

Mathematics
1 answer:
sergiy2304 [10]2 years ago
8 0

Ans: D

differentiate sinx=cosx and differentiate x=1

:)

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When the car moves forward by 180cm , each wheel does one full turn . What is the diameter of the wheels to the nearest cm?
Sav [38]
Since 180cm is one full turn you divide it by pie which is 3.14

=180/3.14

=180/3 (Rounded down)

=60
3 0
3 years ago
A random sample of 4"4 fields" of barley has a mean yield of "49.6"49.6 bushels per acre and standard deviation of 7.997.99 bush
ExtremeBDS [4]

Answer:

The critical value that should be used in constructing the interval is T = 5.8408.

The 99% confidence interval for the true mean yield is between 2.943 bushels per acre and 96.268 bushels per acre.

Step-by-step explanation:

We have the standard deviation of the sample, so we use the students t-distribution to solve this question.

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 = 4 - 1 = 3

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 3 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.995. So we have T = 5.8408. This is the critical value.

The margin of error is:

M = T*s = 5.8408*7.99 = 46.668 bushels per acre

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 49.6 - 46.668 = 2.943 bushels per acre.

The upper end of the interval is the sample mean added to M. So it is 49.6 + 46.668 = 96.268 bushels per acre.

The 99% confidence interval for the true mean yield is between 2.943 bushels per acre and 96.268 bushels per acre.

8 0
3 years ago
For f (x) = 3x + 1 and g(x) = x^2 -6, find (f-g) (x)
natali 33 [55]

Answer:

D

Step-by-step explanation:

(f - g)(x) = f(x) - g(x), so

f(x) - g(x)

= 3x + 1 - (x² - 6) ← distribute by - 1

= 3x + 1 - x² + 6 ← collect like terms

= - x² + 3x + 7 → D

6 0
3 years ago
What is the value of the expression 1/2 (m÷3) +n A. 13/5 B. 13/10 C. 15/11 D. 15/17
OLEGan [10]

Answer:

So far I have gotten 3m + n, there is not equal sign so I am unable to finish this question further.

Step-by-step explanation:

5 0
3 years ago
Dan borrowed money from his parents and he pays back his parents the same amount of money every month He records his payment sch
timurjin [86]

Answer:

D

Step-by-step explanation:

Jmfsxbbihswyvbn

3 0
3 years ago
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