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Anni [7]
3 years ago
7

Find the product -5. 12 =

Mathematics
1 answer:
KatRina [158]3 years ago
7 0
The product of -5 and 12 is -60
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Find the perimeter and area of a rectangle with a width of 2 feet and a length 3 times as long.
rusak2 [61]

Answer:

Length = Width * 3

Width = 2 ft

Length = 2 ft * 3 = 6 ft

Perimeter = (L * 2) + (W * 2)

P = 16 ft

Area = L * W = 12 square feet

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2 years ago
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Read this E[2X^2 â€" Y].
djyliett [7]

Looks like a badly encoded/decoded symbol. It's supposed to be a minus sign, so you're asked to find the expectation of 2<em>X </em>² - <em>Y</em>.

If you don't know how <em>X</em> or <em>Y</em> are distributed, but you know E[<em>X</em> ²] and E[<em>Y</em>], then it's as simple as distributing the expectation over the sum:

E[2<em>X </em>² - <em>Y</em>] = 2 E[<em>X </em>²] - E[<em>Y</em>]

Or, if you're given the expectation and variance of <em>X</em>, you have

Var[<em>X</em>] = E[<em>X</em> ²] - E[<em>X</em>]²

→   E[2<em>X </em>² - <em>Y</em>] = 2 (Var[<em>X</em>] + E[<em>X</em>]²) - E[<em>Y</em>]

Otherwise, you may be given the density function, or joint density, in which case you can determine the expectations by computing an integral or sum.

6 0
2 years ago
Please someone help.
IgorLugansk [536]
1. 950
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3. 1,976
4. 2,698
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5 0
3 years ago
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If the number is divisible by 6 color it brown, all other numbers color orange​
a_sh-v [17]
Where is the question?
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2 years ago
Find the missing angle measures
emmasim [6.3K]

Answer:

see below

Step-by-step explanation:

Assuming s and t are parallel

The two angles are same side interior angles and same side interior angles add to 180 when the lines are parallel

4x-12 + 120 = 180

4x -12 = 60

4x = 72

x = 18

That means 4x -12 = 4(18) -12 = 60

Vertical angles are equal.    Alternate interior angles are equal.  Alternate exterior angles are equal.  All pink dot angles are equal.

Pink dots are 60 degrees

All blue lines are equal.  They are 120 degrees

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2 years ago
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