1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
emmasim [6.3K]
3 years ago
7

Please help me on this

Mathematics
2 answers:
serious [3.7K]3 years ago
3 0
Just rotate it 90 degrees clockwise like this

Irina-Kira [14]3 years ago
3 0

Answer:

Solution : (- 9, - 3)

Step-by-step explanation:

Approach 1 : Imagine that this point (3, - 9) is rotated 90 degrees clockwise. We know that this point lies in the fourth quadrant, so if it is rotated 90 degrees, you can imagine the x - coordinate will be greater than the y - coordinate, if you take their absolute value(s). Remember that the new coordinates will also lie in the third quadrant. Based on these requirements we have the resulting point (- 9, - 3) or option c.

________________________________________

Approach 2 : There is another approach to this, a more exact approach.

Rotation of axis, θ : (x, y) --> (X, Y)

X = xcos(θ) + ysin(θ),

Y = - xsin(θ) + ycos(θ)

Here θ = 90 degrees. Substitute and solve for the exact coordinates.

X = 3cos(90) + - 9sin(90) = 3cos(90) - 9sin(90) = 3 * 0 - 9 * 1 = - 9,

Y = - 3sin(90) + - 9cos(90) = - 3sin(90) - 9cos(90) = - 3 * 1 - 9 * 0 = - 3

As you can see our solution is the same, (- 9, - 3), or option c.

You might be interested in
Find the measure of the angles in the diagram
Usimov [2.4K]
Any angle A[anything]B will have measure 90°.

The angle BWD cannot be determined from information shown here.
4 0
3 years ago
An altitude of a triangle is a perpendicular segment from a vertex to the line containing the opposite side true or false
sashaice [31]
The answer is true. An altitude of a triangle is the perpendicular segment from a vertex to the line containing the opposite side.
3 0
2 years ago
You are taking a​ multiple-choice test that has 55 questions. each of the questions has 33 answer​ choices, with one correct ans
siniylev [52]
<span>Each question has 5 possible choices for an answer>
1st question: 5 ways
2nd question: 5 ways
.......
12th question: 5 ways

----
Total # of possible answers 5*5*5...*5*5 = 5^12 = 244,140,625
-----
Cheers,
Stan H.
========================= 
The answer is 244,140,625</span>
5 0
3 years ago
A number cube labeled 1 to 6 is rolled 450 times. Which is the best prediction for the number of times that the number cube will
Vedmedyk [2.9K]
Haha, I don't think those answers belong to the question asked :P

The probability of rolling less than 3 is 2/6=1/3

So if you rolled 450 times you should expect to roll less than 3:

450(1/3)=150 times.
3 0
3 years ago
Angad and Alex have played 40 tennis matches.
AlladinOne [14]

Answer:

estimate the probability that angad wins

6 0
1 year ago
Other questions:
  • How many 3-digit numerical passwords are there if a digit cannot be repeated?
    8·1 answer
  • Dave Adams bought season tickets for the Boston Celtics. The cost was $1,300.11. The package included 30 home games. What is the
    11·1 answer
  • A mountain climber ascends a mountain to its peak. The peak is 14,090 ft above sea level. The climber then descends 490 ft to me
    11·2 answers
  • suppose the sales tax rate is 9%. if the sales tax amount is $117 on a taxable item, what is the price of the item before tax?
    14·1 answer
  • 4 days ago the gas tank on Ryan's boat was filled with 30 gallons of gasoline today he has 8 gallons of gasoline what is the mea
    11·2 answers
  • Tom had 114 baseball cards. He kept 10 and shared the rest evenly among his 8 friends. How many baseball cards did each friend g
    14·2 answers
  • Was the movie "The Lion King" based on a true story?
    10·2 answers
  • Find the probability for one roll of a number cube.<br><br> P(number greater than or equal to 7)
    10·1 answer
  • Find the absolute value of the complex number 4+4i
    14·1 answer
  • Calculate the middle number in the middle of 12.7 and 21.2.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!