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serg [7]
2 years ago
9

At a​ little-known vacation​ spot, taxi fares are a bargain. A 16​-mile taxi ride takes 18 minutes and costs ​$14.40. You want t

o find the cost of a 38​-minute taxi ride. What unit price do you​ need?
Mathematics
1 answer:
katrin [286]2 years ago
3 0

Answer:

$30.4

Step-by-step explanation:

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Write £1.44 to the nearest 10pence
Lapatulllka [165]

The answer will be £1.40

6 0
3 years ago
Dairy cows at large commercial farms often receive
IrinaK [193]

Answer:

a) The 99% confidence interval for the true mean milk production is (26.35 kg/d, 29.65 kg/d).

b) They would need to use a confidence level of 94.52%.

Step-by-step explanation:

a)

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.575

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample. So

M = 2.575*\frac{2.25}{\sqrt{12}} = 1.65

The lower end of the interval is the mean subtracted by M. So it is 28-1.65 = 26.35 kg/d

The upper end of the interval is the mean added to M. So it is 28 + 1.65 = 29.65 kg/d.

The 99% confidence interval for the true mean milk production is (26.35 kg/d, 29.65 kg/d).

(b) If the farms want the confidence interval to be no wider than 1.25 kg/d, what level of confidence would they need to use?

Now we want to find the value of z when M = 1.25. So:

1.25 = z*\frac{2.25}{\sqrt{12}}

0.6495z = 1.25

z = 1.92, that has a pvalue of 0.9726.

So the confidence level should be 1 - 2*(1-0.9726) = 0.9452

They would need to use a confidence level of 94.52%.

3 0
3 years ago
3(5 √3 + 3 √3) simplified
AleksandrR [38]
3(5 √3 + 3 √3) simplified would be  24√3
3 0
3 years ago
Suppose x(t) is the continuous-time function given by x(t) = 1 on the interval [0; 1] and x(t) = 0 elsewhere. a) Calculate the c
borishaifa [10]

Answer:

a) X( w ) = 1 /jw -   e^-jw / jw

b) X1(t) = 1  for  0.5  

   X1(t) = 0 for elsewhere

Step-by-step explanation:

x(t) continuous time function = 1

interval ( 0,1 )   also x(t) = 0 outside the given interval

a) Determine the continuous time Fourier transformation of x(t)

x( t ) = u(t) - u(t - 1 )

x ( w ) = 1 /jw -   e^-jw / jw

b) supposing x1(t) = x(2t)

x1(t) = u(t) - u ( t - 0.5 )

x1(t) = 1  for  0.5  

x1(t) = 0 for elsewhere

4 0
2 years ago
What is the answer to 5x+11y+5
Brrunno [24]

Answer:

Step-by-step explanation:

There is no answer that’s already in correct form

5 0
3 years ago
Read 2 more answers
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