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8_murik_8 [283]
3 years ago
8

What is the image of a point (-2,4) after a rotation of 270 counterclockwise about the origin

Mathematics
1 answer:
konstantin123 [22]3 years ago
4 0

Answer:

The equivalent 90° CCW rotation maps (x, y) to (-y, x).

(4, -2) becomes (2, 4) after rotation.

Step-by-step explanation:

hope it helps

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Help me to do this question plz plz plz <br>I will make you as brainlist plz​
Mademuasel [1]

Answer:

1. 5

2. 12

3. a. 12

3. b. 18

Step-by-step explanation:

1. 50 - 45 = 5.

2. 26 - 18 = 8. 30 - 18 = 12. 12 + 8 = 20. 20 + 18 = 38. 50 - 38 = 12.

3. a. 24 - 12 = 12.

4. 40 - 12 = 28. 24 - 12 = 12. 28 + 12 + 12 = 52. 70 - 52 = 18.

7 0
3 years ago
Let L be the line with parametric equations x=2+t, y=1-t, z=1+3t.Let v=(1,2,0).Find vectors w1 and w2 such that v= w1 + w2, and
charle [14.2K]

Answer:

w1 = (-1/11, 1/11, -3/11)

w2 = (12/11, 21/11, 3/11)

Step-by-step explanation:

Direction ratio of w1 = Direction ratio of L (because parallel) = K+(1, -1, 3)

Let <a,b,c> be direction ratio of w2.

Then, <a,b,c>. <1,-1,3> = 0

a-b+3c = 0

v = w1 + w2

(1, 2, 0) = k(1, -1, 3) + (a, b, c)

a + k = 1

b - K = 2

c - 3k = 0

Solving 4 equations, a = 12/11, b= 21/11, c = 3/11, k=-1/11

So, w1 = -1/11(1, -1 ,3) = (-1/11, 1/11, -3/11)

w2 = (12/11, 21/11, 3/11)

6 0
3 years ago
Help please NO LINKS <br> Find the angle
algol [13]

Answer:

x = 50.8°

Step-by-step explanation:

We are given:

1.) Angle x

2.) Side opposite to angle x

3.) Hypotenuse

Therefore to find the angle x, we will use the sin inverse:

<em>Sin(x) = Opposite / Hypotenuse</em>

Sin(x) = 6.2/8

x = Sin⁻¹(6.2/8)

<u>x = 50.8°</u>

Hope this helps!

6 0
3 years ago
Find the coordinate of the points of intersection of the graphs without building them: 20x - 15y = 100 and 3x - 5 =6y
Mekhanik [1.2K]

Answer:

(-4.666667, -3.16667)

Step-by-step explanation:

(-4 2/3, -3 1/6)

5 0
3 years ago
Read 2 more answers
(6x2 - 10x +9)+(-5x2 + 9x-5)=
arsen [322]

Answer:

x² - x + 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

(6x² - 10x + 9) + (-5x² + 9x - 5)

<u>Step 2: Simplify</u>

  1. Combine like terms (x²):                                                                                x² - 10x + 9 + 9x - 5
  2. Combine like terms (x):                                                                                  x² - x + 9 - 5
  3. Combine like terms (Z):                                                                                     x² - x + 4
6 0
3 years ago
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