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I am Lyosha [343]
3 years ago
6

A full waterbed mattress is 6 ft by 5 ft by 2 ft. The mattress is to be filled with water that weighs 62.4 StartFraction l b Ove

r ft cubed EndFraction . Find the weight of the water in the mattress to the nearest pound.
Mathematics
1 answer:
lakkis [162]3 years ago
6 0
I don’t understand sorry
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OLEGan [10]

Answer:

B

Step-by-step explanation:

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3 years ago
A local tire dealer wants to predict the number of tires sold each month. He believes that the number of tires sold is a linear
sashaice [31]

Answer:

a) r = 0.13194

b) There is weak positive relationship between X and Y.

c) Slope (\beta}) = 34.8333

d) Intercept (\alpha) = -132.333

e) y = -132.33 + 34.83 x

f) the predicted sales of tires be if he spends five thousand dollars in advertising = 41.82 - (in thousands of tires)

Step-by-step explanation:

a) By the coefficient of determination, the formula is:

r = \frac{n\sum{x}\sum{y} - \sum{xy}}{\sqrt{(n\sum{x}^2 - (\sum{x})^2) (n\sum{y}^2 - (\sum{y})^2})},

n = 6. Other values are provided too. Just substitute and obtain the value of r.

b) For correlation interpretation:

                         -1 ≤ r ≤ 1,

The closer the value to 1 the strong the relationship. If close to -1, there is strong negative relations and if close to +1, there is strong positive relationship. when the value is close to 0, there is weak positive relationship.

c) Slope is given as:

\beta = \frac{n\sum{x}\sum{y} - \sum{xy}}{n\sum{x}^2 - (\sum{x})^2 }, and

d) Intercept is given as:

\alpha = \bar{y} - \beta \bar{x}, \\\bar{y} = \frac{\sum{y}}{n} \; and, \; \bar{x} = \frac{\sum{x}}{n}

e) We obtain \beta = 34.8333 \; and \; \alpha = -132.333, therefore, the estimated Regression equation:

                                       y = -132.33 + 34.83 x

f) Since the values are given is thousands of dollar. Then 5000 dollars is simply 5. We substitute the value into <em>x</em> in the regression equation and we have:

                                    y = -132.33 + 34.83*(5) = 41.82

7 0
3 years ago
During a bike challenge,riders have to collect various colored ribbons. Each 1/2 mile they collect a red ribbon, each 1/8 mile t
andrew-mc [135]
At the 3/4 marker, the rider can collect a green ribbon and a blue ribbon.

Because 3/4 is the 3rd stop for a blue ribbon and 3/4 is the 6th stop for a green ribbon.

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What is the value of the 5 in the number 14.5?
WINSTONCH [101]
The alue of 5 is the tenths place.
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3 years ago
Dishwashers are on sale for 25% off the original price ( d ), which can be expressed with the function p ( d ) = 0.75d. Local ta
Marta_Voda [28]
<span>Price of the dishwashers on sale are represented with the function: p ( d ) = 0.75 d ( 100 % - 25 % = 75 % or 0.75 d ): After that we have additional 14 % on the discounted price ( 100 % + 14 % = 114 % OR 1.14 ): C ( P ) = 1.14 P. Finally, c ( p ( d ) ) = 1.14 * 0.75 d = 0.855 d. Answer: C ) c [ p ( d ) ] = 0.855 d Hope I helped! :) Cheers!</span>
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