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andre [41]
3 years ago
8

Need to find a fraction that is greater than 1/8 but less than 1/2.

Mathematics
2 answers:
o-na [289]3 years ago
8 0

Answer:

1/4

Step-by-step explanation:

Dahasolnce [82]3 years ago
7 0

Answer:

1/4

Step-by-step explanation:

with fractions, the smaller the donomonator, the greater the fraction and vise versa.

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Is there a relationship between the weight and price of a mountain​ bike? The following data set gives the weights and prices fo
melamori03 [73]

Answer:

Step-by-step explanation:

Hello!

The objective is to determine if there is a linear association between the price of a mountain bike (Y) and it's the weight (X).

a.

Looking at the Scatterplot the data is dispersed in all quadrants of the graph, at first glance there seems to be some kind of functional relationship between the price and weight of mountain bike bicycles. If you are not too strict maybe there could be a slight negative relationship between them.

b.

The linear regression model is E(Yi)= α + βXi

To find the regression model for this particular set of variables you have to estimate the intercept and the slope.

a= Y[bar] - bX[bar] = 1961.40 $

b= \frac{sum XiYi-\frac{(sumXi)(sumYi)}{n} }{sumXi^2-\frac{(sumXi)^2}{n} } = -42.99 $/LB

^Yi= 1961.40 - 42.99Xi

$ 1961.40 is the estimated value of the average price if the weight of the mountain bike is zero. (It has no contextual sense)

-42.99 $/LB is the modification of the estimated average price every time the weight of the mountain bike.

c.

In this item, you need yo obtain a value of price for a given value of weight. To do so all you have to do is replace the value on the estimated regression model:

^Y/X=3232= 1961.40 - 42.99*32= $585.72

I hope it helps!

3 0
3 years ago
If f(x) = 2x2 + 1, what is f(x) when x = 3?.
kvv77 [185]

Answer:

5/3 is the correct answer

8 0
3 years ago
If all the edges of a prism are multiplied by 5, then the volume of the prism will be multiplied by?
nirvana33 [79]

Answer:

125

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
What is the area of this figure? Enter your answer in the box.
MArishka [77]
The area of this figure is, the area of this figure.

5 0
3 years ago
A rectangular bird sanctuary is being created with one side along a straight riverbank. the remaining three sides are to be encl
Mariana [72]
<span>2 km wide by 4 km long with the long side parallel to the river. So we can enclose a rectangular area using just 3 sides since the 4th side is provided free by the river. I'll use the variable L to represent the length of the side that's parallel to the river and W to represent the distance from the river that parallel side is. So the total perimeter of the fence will be 2W + L. Let's write down some equations. Area enclosed A = W * L Length of L expressed in terms of W 8 = 2W + L 8 - 2W = L Now substitute (8-2W) for L in the equation for the area. A = W * L A = W * (8-2W) A = 8W - 2W^2 Since we're looking for a maximum value, that will happen when the slope of the function is equal to 0. And the first derivative of the function tells you the slope at each point. So we need to calculate the first derivative. For simple functions such as what we have, we just need to multiply the coefficient of each term by the exponent of that term, then subtract 1 from the exponent. So let's calculate the first derivative of A = 8W - 2W^2 A = 8W - 2W^2 The term 8W has an implied exponent of 1 for W, so 8 * 1 = 8. And 1 - 1 = 0. So we have 8W^0. And since W^0 = 1, we have 8 as the 1st term of the derivative. The next term is -2W^2. So -2*2 = -4 and 2-1 = 1, giving us -4W^1. And we can get rid of the explicit exponent of 1 since that's assumed to exist giving us a term of -4W. So the first derivative becomes A' = 8 - 4W Now let's solve that equation for A' = 0. A' = 8 - 4W 0 = 8 - 4W 4W = 8 W = 2 So the ideal width of the fence is 2. And looking back at the equation 8 - 2W = L, we can calculate the length as 8 - 2*2 = 8 - 4 = 4, so the length of the fence is 4. So the dimensions of the sanctuary is 4 km parallel to the river and extended 2 km from the river for a total area of 4*2 = 8 km^2. To demonstrate that is the ideal size, let's show that if the width is either smaller or larger, then we'll have a smaller sanctuary. Let's show the smaller case. For this we'll introduce a variable called "e" which represents a very tiny, but non-zero amount of length. So we'll call the width W+e or 2+e and the length will be 8 - 2*(2+e) = 8 - 4 - 2e = 4 - 2e So the area is A = WL A = (2+e)(4-2e) A = 8 -4e + 4e - 2e^2 A = 8 - 2e^2 And as you can see, as long as e is none zero the area will be smaller than 8 km^2. Now let's try a width that's less than 2 by a tiny amount. Our width is now (2-e) and that makes our length (4+2e). So A = WL A = (2-e)(4+2e) A = 8 + 4e -4e - 2e^2 A = 8 - 2e^2 And once again, if the width is slightly smaller so the length is slightly longer, the area is once again, slightly smaller. So the absolute best side for the sanctuary is 2 km wide by 4 km long.</span>
6 0
3 years ago
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