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Natalka [10]
3 years ago
7

*NEED HELP??!!! The regression equation y = 3.648 • 1.182x approximates the cost to go on a safari, y, given the number of years

since it opened in 2005, x. Which is the best estimate for the cost of a vehicle to drive through the safari in 2011?
A) $ 25.87

B) $ 22.95

C) $ 10.74

D) $ 9.95


I got C on this but im not for sure. if its the right answer or what /:
Mathematics
1 answer:
Ghella [55]3 years ago
7 0

Answer:

D) $9.95

Corrected question;

! The regression equation y = 3.648 • 1.182^x approximates the cost to go on a safari, y, given the number of years since it opened in 2005, x. Which is the best estimate for the cost of a vehicle to drive through the safari in 2011?

Step-by-step explanation:

Given;

The regression equation

y = 3.648 • 1.182^x

Where;

x = number of years since it opened in 2005

y = the cost to go on a safari

For this case;

x at 2011 = 2011 - 2005

x = 6 years

Substituting into the regression equation;

y = 3.648 × 1.182^(6)

y = 9.948547753694156132352

y = $9.95

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Answer:

y=-3/2x-7

Step-by-step explanation:

8 0
3 years ago
A distance AB is observed repeatedly using the same equipment and procedures, and the results, in meters, are listed below: 67.4
skad [1K]

Answer:

a) \bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401

b) The sample deviation is calculated from the following formula:

s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And for this case after replace the values and with the sample mean already calculated we got:

s=0.0036

If we assume that the data represent a population then the standard deviation would be given by:

\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}

And then the deviation would be:

\sigma =0.00319

Step-by-step explanation:

For this case we have the following dataset:

67.401, 67.400, 67.402, 67.396, 67.406, 67.401, 67.396, 67.401, 67.405, and 67.404

Part a: Determine the most probable value.

For this case the most probably value would be the sample mean given by this formula:

\bar X =\frac{\sum_{i=1}^n X_i}{n}

And if we replace we got:

\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401

Part b: Determine the standard deviation

The sample deviation is calculated from the following formula:

s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And for this case after replace the values and with the sample mean already calculated we got:

s=0.0036

If we assume that the data represent a population then the standard deviation would be given by:

\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}

And then the deviation would be:

\sigma =0.00319

3 0
4 years ago
A retangle has an area of 30 square meters and a perimeter of 34 meters what are the dimensions of the retangle
s344n2d4d5 [400]

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Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

Area of a rectangle = l × w

where l = length

w = width

Therefore,

2l + 2w = 34 ...... i

l × w = 30 ........ ii

From equation i

2l + 2w = 34

Divide through by 2.

l + w = 17 ...... iii

Then, l = 17 - w ........ iv

Put equation iv into ii

l × w = 30

(17 - w) × w = 30

17w - w² = 30

w² - 17w + 30 = 0

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w(w - 15) - 2(w - 15) = 0

(w - 2) = 0

w = 0 + 2 = 2

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w = 0 + 15 = 15

Length = 15 meters

Width = 2 meters

6 0
3 years ago
I’ll mark brainlest !! (60 points )
Feliz [49]

Answer:

B and D are the answer's.

Step-by-step explanation:

7 0
3 years ago
All I've found is 1 but how do I work that out properly beaides guess and check​
BaLLatris [955]

Answer:

1

Step-by-step explanation:

(1-x)/x=0

or, 1-x=0

or, -x=-1

or, x=1

5 0
3 years ago
Read 2 more answers
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