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4 years ago

Which of the following are the coordinates of point F prime , the image of point F, after a rotation of 90° about the origin?

Mathematics

2 answers:

myrzilka [38]4 years ago

8 0

He correct answer is (-3,0)

Vadim26 [7]4 years ago

6 0

There are 2 possibilities:

if F is rotated <span>90° about the origin in the clockwise (negative) direction, the image is the point F'(3, 0), as shown with the red line segments.

</span>if F is rotated 90° about the origin in the counterclockwise (positive) direction, the image is the point F'(-3, 0), as shown with the green line segments.

both 1 and 2 are possible.

Remark: A rotation of point F, it the movement of F in a circle with center O and with radius OF.

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Alchen [17]

Answer:

The answer is...

3 0

3 years ago

First CORRECT answer gets brainly:

pychu [463]

<h2>Answer:</h2><h3>1. D</h3><h3>2. F</h3><h3></h3><h3>Probs wrong</h3>

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3 years ago

Pablo Picasso is making one color version of all his paintings. He uses the colors in the following order and then starts over f

Zina [86]

Answer:

The answer is blue

Step-by-step explanation:

There are five colors. So count by fives until you hit 25.

red, blue, pink, green, and purple. 5

red, blue, pink, green, and purple. 10

red, blue, pink, green, and purple. 15

red, blue, pink, green, and purple. 20

red, blue, pink, green, and purple. 25

Then count to 27.

red, blue. 27

So it is blue.

3 0

4 years ago

Suppose that two defective refrigerators have been included in a shipment of six refrigerators. the buyer begins to test the six

Verdich [7]

a) Answer: 0.2 <span>

consider the 4 refrigerators that waschosen out of the 6. There are 6*5*4*3 ways to choose these refrigerators (not 6choose4, since refrigerators are distinguishable). Therefore the denominator of our probability is 360.

The numerator is a bit harder. Consider the first 3 refrigerators that was chosen. 2 were good, 1 was bad. There are 3choose1 = 3 places that the bad refrigerator can go. In each of these places, we count the number of ways to pick these 3 out of the 6. Since one is good, there are 4 ways (b/c there are 4 good refrigerators) to select the first. Another is also good, so the number of ways becomes 4*3. The last is bad, and there are 2 bad ones, so the number of ways to select these 3 becomes 4*3*2. Do not be confused by the fact that I ordered the above, this is taken care of by multiplying by the 3choose1 from above. Think of it like 4*3*2 + 4*2*3 + 2*4*3. Regardless, there is only one choice for the 4th refrigerator: bad. Thus the number of ways of being able to find the last bad fridge on the 4th test is 3*4*3*2 = 72.

The probability is then 72/360 = 0.2

I did the same method for the probability of searching the last bad fridge on the nth trial, and they all added to 1, so I'm pretty sure this is right.

b) Answer: 0.4

This probability is equal to:
P(find on 2nd) + P(find on 3rd) + P(find on 4th)

You know the third term, and the first two you can find in the same way as I did above. They are 0.06666... and 0.1333333...

c) Answer: 0.5

This is P(find on 3rd) + P(find on 4th)

You know that of the 4 refrigerators left, 3 are good and 1 is bad. So, P(3) = 1/4, because there is a 1 in 4 chance that you choose the bad one right away

P(4) = 3/4 * 1/3 = 0.5, since there is a 3 in 4 shot you select a good one, then a 1 in 3 that you select a bad one. </span>

4 0

4 years ago

A loss of $500 in the stock market is worse than a gain of $200 in the stock market.

kogti [31]

Answer:

-500 < 200

Step-by-step explanation:

In inequality,

less than = <

greater than = >

Less than equal to = ≤

Greater than equal to = ≥,

Here, the given sentence is,

loss of $500 is worse than a gain of $200

Generally loss represents by an amount with negative sign,

That is, loss of $ 500 = - $ 500

Also, worse than is equivalent to less than

Thus, the required inequality would be,

-500 less than 200

⇒ -500 < 200

5 0

3 years ago