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BaLLatris [955]
3 years ago
9

If f( n ) = n 2 - n , then f(-4) is _____. -20 20 12 -12

Mathematics
1 answer:
xenn [34]3 years ago
5 0

f(-4)=20

Option B is correct.

Step-by-step explanation:

We are given f(n)=n^2-2

We need to find f(-4)

Solving:

f(n)=n^2-n\\f(-4)=(-4)^2-(-4)\\f(-4)=16+4\\f(-4)=20

So, f(4)=20

Option B is correct.

Keyword: Using function to find f(x)

Learn more about Using function to find f(x) at:

  • brainly.com/question/525056
  • brainly.com/question/2645523
  • brainly.com/question/4231418

#learnwithBrainly

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Find DY divided by DX by implicit differentiation y=sinxy 
amm1812

Answer:

Step-by-step explanation:

y = sin(xy)\\\frac{d}{dx}y=cos(xy)(\frac{d}{dx}(xy))\\  \frac{d}{dx}y = cos(xy)(y + x*\frac{d}{dx}y)\\ write \: \frac{d}{dx}y \: as\:y'\\y' = cos(xy)(y+xy')\\y' = ycos(xy) + xy'cos(xy) \\y'-xy'cos(xy) = ycos(xy)\\y'(1-xcos(xy)) = ycos(xy)\\\\y' = \frac{ycos(xy)}{1-xcos(xy)}

6 0
3 years ago
Need help with my math simplify
nlexa [21]

2+42/-2-5(-3)  Multiply -5 and -3.

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17-21. And from here, its easy. Just a simple subtraction problem.

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3 0
3 years ago
Find each percentage of 75 explain your reasoning 1.what Is 10%of 75% 2. What is 1% of 75%
kozerog [31]
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4 0
4 years ago
-5(9 - 6k) with k = -3
Jobisdone [24]

Answer:

-135

Step-by-step explanation:

-5(9 - 6k)

Let k = -3

-5 ( 9 - 6*-3)

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3 0
3 years ago
In the United States, 30% of people own a cat and 3% of people own a bird. What is the probability of someone owning both a cat
Alex777 [14]

Answer: 9/100

Step-by-step explanation:

Probability of people own a cat:

P(cat)=30/100=0.3

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6 0
3 years ago
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