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SpyIntel [72]
3 years ago
15

Solve please 4x^2+ 8xy - 60y^2

Mathematics
1 answer:
Stells [14]3 years ago
7 0
4x^2+ 8xy - 60y^2 =48x^3y^3
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Suppose that you wanted to predict the price of a house based on where the house was located (northeast, northwest, southeast, o
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Answer: b. 3

Step-by-step explanation:

We know that , the indicator variable is a dummy variable in regression analysis which is used to denote either presence ( by 1 ) or absence ( by 0 ) of a nominal variable that can be responsible for the change in output.

Number of indicator variables = (all levels in the original variable)-1

Here , the given categories as per the location are northeast, northwest, southeast, or southwest.

i.e. all levels in the original variable = 4

Then, the umber of indicator variables we need = 4-1 =3

Hence, we need 3 indicator variables.

Thus , the correct answer is b. 3.

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3 years ago
Tom's mark of a maths test was 68.This was 20% worse than his mark in English.what was Tom's English mark ?
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a sleeping bag weighs 8 pounds. your backpack and sleeping bag together weigh 31 pounds. write an equation to determine whether
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31-8=23 pounds for the backpack.
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Gwar [14]

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Step-by-step explanation:

We know the circumference formula is C=2πr. Since our circumference is given in terms of π, we can easily figure out what the radius is.

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36=2r                        [divide both sides by 2]

r=18 cm

6 0
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That's true. If the integers both have the same sign, then their product and quotient are both positive. If signs are different, then product and quotient are both negative.
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