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3 years ago

Hiiooo! Can someone please help ❤️❤️❤️

Mathematics

1 answer:

solniwko [45]3 years ago

6 0

Answer:

tan x = $\frac{f}{e}$

cos x = $\frac{e}{d}$

sin x = $\frac{f}{d}$

Step-by-step explanation:

tan = $\frac{opposite}{adjacent}$

tan x = $\frac{f}{e}$

cos = $\frac{adjacent}{hypotenuse}$

cos x = $\frac{e}{d}$

sin = $\frac{opposite}{hypotenuse}$

sin x = $\frac{f}{d}$

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The housing market has recovered slowly from the economic crisis of 2008. Recently, in one large community, realtors randomly

k0ka [10]

Answer:

The 99% confidence interval for the mean loss in value per home is between $5359 and $13463

Step-by-step explanation:

We are in posession of the sample's standard deviation, so we use the student's 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 = 45 - 1 = 44

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 44 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995([tex]t_{995}$ ). So we have T = 2.6923

The margin of error is:

M = T*s = 1505*2.6923 = 4052.

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 9411 - 4052 = $5359

The upper end of the interval is the sample mean added to M. So it is 9411 + 4052 = $13463

The 99% confidence interval for the mean loss in value per home is between $5359 and $13463

4 0

4 years ago

Graph the line y= -7.

amid [387]

Answer: Use the coordinates (0,-7)

Step-by-step explanation:

7 0

3 years ago

At a charity function, $150,045 was donated by three companies A, B, and C in the ratio 7 : 5 : 9. How much money did company B

Svetach [21]

35,725
this is because u can take the ratio 7+5+9=21 then take 150,045/21 which u get 7,145 then time 5 and u get 35,725

8 0

3 years ago

Read 2 more answers

The number of defects in the first five cars to come through a new production line are 9, 7, 10, 4, and 6, respectively. If the

garri49 [273]

Answer:

D. I and III only

Step-by-step explanation:

Number of first fie defects are given as 9,7,10,4 and 6.

First we have to arrange the above data in ascending order which is 4,6,7,9,10

Now if we consider the defect in sixth car to be 3 then our data will look like: 3,4,6,7,9,10

So the mean of above data would be $\frac{3+4+6+7+9+10}{6}$ = 6.5

and Median of the above data would be = $\frac{3^{rd} obs + 4^{th} obs}{2}$ = $\frac{6+7}{2}$ = 6.5

Hence mean and median number of defects are same if the sixth car has 3 defects.

Now if we consider the defect in sixth car to be 12 then our data will look like: 4,6,7,9,10,12

So the mean of above data would be $\frac{4+6+7+9+10+12}{6}$ = 8

and Median of the above data would be = $\frac{3^{rd} obs + 4^{th} obs}{2}$ = $\frac{7+9}{2}$ = 8

Hence mean and median number of defects are same if the sixth car has 12 defects.

But Now if we consider the defect in sixth car to be 7 then our data will look like: 4,6,7,7,9,10

So the mean of above data would be $\frac{4+6+7+7+9+10}{6}$ = 7.167

and Median of the above data would be = $\frac{3^{rd} obs + 4^{th} obs}{2}$ = 7

Hence mean and median number of defects are not same if the sixth car has 7 defects.

Therefore option D is correct.

8 0

3 years ago

Will give brainliest!!

77julia77 [94]

Answer: They can buy 16 coats.

Step-by-step explanation:

All you have to do is divide $740 by $46.25 and you will get 16 which will be your final answer.

4 0

3 years ago