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Marina CMI [18]
3 years ago
15

What number is not coefficient of n in the expression 3n + 8 - n + 4n

Mathematics
2 answers:
RoseWind [281]3 years ago
8 0
Coefficients are numbers that have variables attached to them.

8 is your answer, for it is a constant, which means it has no variables

It is asking for NOT a constant, which means that n is your answer, because it has no constants attached to it

hope this helps
gogolik [260]3 years ago
7 0
The only number that does not multiply n is 8, so 8 is the answer.
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where (h, k) is the center of the circle and <em>r</em> is the radius.

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If we simply line up the equation of our given circle with our formula,

we can see that -h = 3 or h = -3 and -k = -2 so k = 2.

So now we have our answer.

center ⇒ (-3, 2)

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What is the absolute value of the distance from the numbers -6 to 5?
katovenus [111]

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8 0
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(Photo attached) Trig question. Thanks in advance! :)
kolbaska11 [484]

Answer:

  a) cos(α+β) ≈ 0.8784

  b) sin(β -α) ≈ -0.2724

Step-by-step explanation:

There are a couple of ways to go at these. One is to use the sum and difference formulas for the cosine and sine functions. To do that, you need to find the sine for the angle whose cosine is given, and vice versa.

Another approach is to use the inverse trig functions to find the angles α and β, then combine those angles and find find the desired function of the combination.

For the first problem, we'll do it the first way:

  sin(α) = √(1 -cos²(α)) = √(1 -.926²) = √0.142524 ≈ 0.377524

  cos(β) = √(1 -sin²(β)) = √(1 -.111²) ≈ 0.993820

__

a) cos(α+β) = cos(α)cos(β) -sin(α)sin(β)

  = 0.926×0.993820 -0.377524×0.111

  cos(α+β) ≈ 0.8784

__

b) sin(β -α) = sin(arcsin(0.111) -arccos(0.926)) ≈ sin(6.3730° -22.1804°)

  = sin(-15.8074°)

  sin(β -α) ≈ -0.2724

4 0
3 years ago
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