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
A physician orders a dosage of 85mg. The drug on hand is labeled “0.1g in 1.5mL”. How many ML should the pharmacy technician giv
marin [14]

Answer:

Step-by-step explanation:

0.1 g = 100 mg

85 mg / 100 mg = x mL / 1.5 mL

x = 1.275 mL

7 0
2 years ago
Giving brainliest but has to be a actual answer
vaieri [72.5K]

Answer:

2,800 Books to be the same.

3 0
3 years ago
Eight times a sum of a number is 5
nata0808 [166]

Answer:

Step-by-step explanation:

So 8 times what is 5?

8 times x=5

x=0.625

4 0
2 years ago
Samirs bedroom has an area of 48 square feet.
vazorg [7]

Answer: 2 feet

Step-by-step explanation:

3 0
2 years ago
The fountain in the pond at the public park near Kevin’s house has a pump that recirculates 75 gallons of water in 1/4 of an hou
il63 [147K]

Answer:

300 gallons an hour

Step-by-step explanation:

If it pumps 75 gallons in 1/4 of an hour (15 minutes), then if you times that by four to make it a full hour (60 minutes). 75 times 4 is 300.

7 0
2 years ago
Other questions:
  • A home improvement store advertises 60 square feet of flooring for $287.00. The price includes an $80.00 installation fee. How m
    8·1 answer
  • It takes 34 pounds of seed to completely plants 5 acre field. How many pounds of seed are needed per acre?
    7·1 answer
  • Solve x - 3 < -1. Graph the solution.
    15·1 answer
  • You help me please can you help me please this is a very hard thank you
    8·1 answer
  • A politician running for a third term is planning to contact all contributors to her first two campaigns. If 1,576 individuals c
    10·1 answer
  • Can you solve and explain you would use in solving a 2 step equations
    13·2 answers
  • Name the odered pair if the x-intercept is -2
    7·1 answer
  • The following table shows how much Dave gave each of his kids for allowance last month Find the median allowance
    9·1 answer
  • Add or subtract the following mixed numbers using the first method. (Add the whole numbers; add the fractions; combine the parts
    15·1 answer
  • Solve the system of linear equations 3x-2y=1 9x-6y=1​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!