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Brums [2.3K]
3 years ago
14

You have been hired by joe's gas stop to estimate a demand function for its regular gasoline sales. occordingly, you collect 50

days of data on quantity sold (the dependent variable measured in gallons) and price (the explanatory variable measured in cents per gallon). the data is shown on the "gasoline demand data" tab and an x-y scatter of the data is shown at right. you use the "data analysis add-in" to estimate the regression results shown below:
Mathematics
1 answer:
Digiron [165]3 years ago
8 0
(a) Sample correlation ==> -0.7916
(b) Standard Deviation for Quantity ==> 801.6816
(c) Standard Deviation for Price ==> 39.1660
(d) Relation to coefficient on Price ==> <span>−16.2028</span>
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the length of a rectangle is 9 cm and the diagonal of the rectangle is 11 cm. Find the width of the rectangle​
ss7ja [257]

Answer: The width  is the square root of 40 or 6.32

Step-by-step explanation:

9^2 + b^2 = 11^2  where b squared is the width  

81 + b^2 = 121

-81              -81

  b^2 = 40

b= 6.32

7 0
3 years ago
All of the functions shown below are either exponential growth or decay functions.
AlekseyPX

Answer:

Step-by-step explanation:

If an exponential function is in the form of y = a(b)ˣ,

a = Initial quantity

b = Growth factor

x = Duration

Condition for exponential growth → b > 1

Condition for exponential decay → 0 < b < 1

Now we ca apply this condition in the given functions,

1). y=3.2(1+0.45)^{2x}

   Here, (1 + 0.45) = 1.45 > 1

   Therefore, It's an exponential growth.

2). y=(0.85)^{3x}

    Here, (0.85) is between 0 and 1,

    Therefore, it's an exponential decay.

3). y = (1 - 0.03)ˣ + 4

    Here, (1 - 0.03) = 0.97

    And 0 < 0.97 < 1

    Therefore, It's an exponential decay.

4). y = 0.5(1.2)ˣ + 2

    Here, 1.2 > 1

    Therefore, it's an exponential growth.

5 0
3 years ago
I bought a keychain for $6.75 and a T-shirt that cost X dollars each altogether the items cost $31.50 complete the type diagram
Mice21 [21]

Answer:

24.75

Step-by-step explanation:

keychain=$6.75

t.shirt=X

according to question

X+6.75=31.50

X=24.75

3 0
2 years ago
6ft to 8yd as a fraction in simplest form
raketka [301]
Must be in the same units
6 ft/ 24 ft   (8yds x 3 = 24 ft)
\frac{6}{24} =  \frac{1}{4}

Let's use yards instead
6 ft = 2 yds
so 
2 yds/8 yds  again is 1/4
8 0
4 years ago
I need help with d please.
m_a_m_a [10]
Find the volumes of each separate rectangular prism, (top) 9 x 4 x 12 = 432 cubic meters, (bottom) 10x2x2 = 40 cubic meters, and then add them together to get the overall volume, 40+432 = 472 cubic meters. the strategy is using length times width times height, LxWxH. 
8 0
3 years ago
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