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3 years ago

Wat is linear regression

Mathematics

1 answer:

Leno4ka [110]3 years ago

5 0

Linear regression - the relation between variables when the regression equation is linear: e.g., y = ax + b

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Elan Coil [88]

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2 years ago

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Write 186% as a mixed number in simplest form

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Step-by-step explanation:

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2 years ago

If f(x) = x^2 - 2x and g(x) = 6x + 4, for which value of x does (f+g)(x) = 0?

Goshia [24]

In terms of X then x would be equal to -2

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2 years ago

An empty cylindrical vase with a radius of 8 cm and a height of 9 cm is filled with 6 cm^3 of sand every 15 seconds. At the same

Andru [333]

General Idea:

The volume of cylinder is given by $\pi r^{2} h$ , where r is the radius and h is the height of the cylinder.

Applying the concept:

Step 1: We need to find the volume of full cylinder with the given dimensions using the formula.

Volume of full cylinder $=\pi r^{2} h=\pi* 8^{2} *9=576\pi cm^{3}$

Volume of half cylinder $=\frac{576\pi }{2} =288\pi cm^{3}$

Step 2: Let x be the number of minutes of filling the sand.

$6 cm^{3}$ of sand filled every 15 seconds, there are four 15 seconds in a minute.

So volume of sand filled in 1 minute $= 6*4 cm^{3} = 24 cm^{3}$ .

$8 cm^{3}$ of sand taken out of cylindrical vase every minute.

Net volume of sand filled in 1 minute = Volume of sand filled in the vase in one minute - Volume of sand taken out in 1 minute

Net volume of sand filled in 1 minute $=24 cm^{3} - 8cm^{3}=16cm^{3}$

Volume of sand filled in x minutes $= 16x$ .

We need to set up an equation to find the number of minutes need to fill half the volume in cylindrical vase.

$16x = 288\pi \\ \\ x=\frac{288\pi}{16} \\ \\ x=18\pi \\ \\ x=57 minutes$

Conclusion:

The number of minutes required for the base be half filled with sand is 57

6 0

3 years ago

The Calef family likes to paddle along the Susquehanna River.

xxTIMURxx [149]

Answers:

a. $\frac{14}{3}=4.667$ miles/day

b. 14 miles

Explanation:

Part a:

We are given that they paddled a total distance of 14 miles for 3 days. To get the distance paddled each day, we will divide the total paddled distance by the number of days

This is done as follows:

Distance paddled each day = $\frac{14}{3}=4.667$ miles/day

Part b:

Now, we are given that:

i. They went half their daily distance:

Daily distance = $\frac{1}{2}*\frac{14}{3}=\frac{7}{3}$ miles/day

ii. They extended the trip twice as many days

Number of days = 2 × 3 = 6 days

The total distance paddled will be equivalent to the product of the distance paddled each day and the total number of days

This means that:

Total distance = $\frac{7}{3}*6=14$ miles

Hope this helps :)

4 0

3 years ago