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kakasveta [241]
2 years ago
13

A rocket is launched in the air. The graph below shows the height of the rocket hh in meters after tt seconds.

Mathematics
1 answer:
fgiga [73]2 years ago
3 0

Answer:

The answers are=

  1. (38, 0)
  2. time
  3. in seconds
  4. (19, 1768.9)
  5. Height
  6. in meters
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Express the complex number 3(cos270° + i sin270°) in standard a + bi form.
Y_Kistochka [10]
Answer is choice C
The expression given is equivalent to -3i

============================================

Explanation:

Using a calculator, a reference sheet, or the unit circle, you'll find that:
cos(270) = 0
sin(270) = -1

So this means
z = 3(cos(270)+i*sin(270))
z = 3(0+i*(-1))
z = 3*0+3*i*(-1)
z = 0-3i
z = -3i
which is in a+bi form where a = 0 and b = -3
4 0
3 years ago
Point K is rotated 90°. The coordinate of the pre-image point K was (2, –6) and its image K’ is at the coordinate (−6, −2). Find
umka21 [38]

Answer:

Hello! The answer to your question will be below.

Step-by-step explanation:

The answer would be clockwise.

So point k was rotated 90 degrees clockwise.....

Review.....

Question:

Point K is rotated 90 degrees. The coordinate of the pre-image point K was (2,-6) and it’s image K’ is at the coordinate (-6,-2).Find the direction of the rotation.

THE DIRECTION OF THE ROTATION WAS CLOCKWISE.

Hope this helps! :)

⭐️Have a wonderful day!⭐️

8 0
3 years ago
Which is the solution
Stels [109]
B is the answer
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Elimination w/ multiplication
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Answer:

"Equations can be multiplied by a constant to allow for elimination by addition or subtraction. This process is called Elimination by Multiplication. We multiply the first equation by "2" to prepare it for elimination by subtraction. Now that we know "x", we can use this information to solve for "y"."

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Which statement is true?
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Answer:

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Step-by-step explanation:

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