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Otrada [13]
3 years ago
12

Which is the value of this expression when j = negative 2 and k = negative 1?

Mathematics
2 answers:
Minchanka [31]3 years ago
7 0

Answer:

The answer is A.

Step-by-step explanation:

I did the test, and I also solved it. Its the only logical answer.

Natalija [7]3 years ago
3 0

Answer:

Option A.

Step-by-step explanation:

It is given that

j=-2, k=-1

The given expression is

\left(\dfrac{jk^{-2}}{j^{-1}k^{-3}}\right)^3

Substitute the given values in the above expression.

\left(\dfrac{(-2)(-1)^{-2}}{(-2)^{-1}(-1)^{-3}}\right)^3

\Rightarrow \left(\dfrac{(-2)(1)}{\dfrac{1}{-2}(-1)}\right)^3

\Rightarrow \left(\dfrac{-2}{\dfrac{1}{2}}\right)^3

\Rightarrow \left(-4\right)^3

\Rightarrow -64

Therefore, the correct option is A.

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2. Katryn swims at a rate of 50 meters in 40 seconds. At this rate, how many meters
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Answer:

D.) 75 meters

Step-by-step explanation:

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So, you divide 60 divided by 40=1.5

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D.)

Hope this helped!! :)

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2 years ago
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Answer:

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8 0
1 year ago
Janelle wrote the matrix addition below. Which statement is true?
Sonja [21]

Option A is correct.

Step-by-step explanation:

We need to identify which statement is true in matrix addition.

In matrix addition we just add the corresponding elements.

In the options given only Option A is correct i.e, (n+4)-7  = 18

All other options have error in them.

In Option B there should be -12 instead of +12

In Option C there should be -11 instead of 11

In Option D we are not adding corresponding entries.

So, Option A is correct.

Keywords: Matrix addition

Learn More about Matrix Addition at:

  • brainly.com/question/10666510
  • brainly.com/question/4034547

#learnwithBrainly

6 0
3 years ago
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Kim is reading a book with 380 pages. She read 20 pages each day until she reached Part 2 of the book. Part 2 of the book is 160
d1i1m1o1n [39]
If you divide 380 by 20, you get 19. To check this, multiply 20 x 19 to see 380. Hope this helps :D
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