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Taya2010 [7]
2 years ago
9

Plz help me well mark brainliest if correct.............

Mathematics
2 answers:
Marta_Voda [28]2 years ago
6 0
The answer is 11 :) hope that helped
MrRissso [65]2 years ago
4 0

Answer:

Yup, 11 is the answer. because 4 -15 is 11.

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Draw the angle below in standard position. -3pi/4
andriy [413]

First of all, the negative sign means that we will turn clockwise.

Since \frac{\pi}{4} is half a quarter, we have:

  • -\frac{\pi}{4} brings you at half of quadrant IV
  • -\frac{2\pi}{4} brings you on the negative side of the y axis
  • -\frac{3\pi}{4} brings you at half of quadrant III

So, option A is correct.

8 0
3 years ago
Please help this is very important
alexandr1967 [171]

Answer:

Here's what I get.

Step-by-step explanation:

1. Rotate 180° about origin

The formula for rotation of a point (x,y) by an angle θ about the origin is  

x' = xcosθ  -  ysinθ

y' = ycosθ + xsinθ

If θ = 180°, sinθ = 0 and cosθ = -1, and the formula becomes

x' =   -x

y' =  -y

The rule is then (x, y) ⟶ (-x, -y).

H: (-3, -5) ⟶ (3, 5)

J: (-5, -3) ⟶ (5, 3)

Q: (0, -1) ⟶ (0, 1)  

The vertices of H'J'Q' are (3, 5), (5, 3), and (0, 1).

2. Rotation 90° counterclockwise about origin

cos90°  = 0 and sin90° = 1

x' = xcos90°  -  ysin90° = -y

y' = ycos90° + xsin90° =  x

The rule is then (x, y) ⟶ (-y, x).

B: (4, 5) ⟶ (-5, 4)

L: (5, 0) ⟶ (0, 5)

S: (2, 2) ⟶ (-2, 2)  

The vertices of B'L'S' are (-5, 4), (0, 5), and (-2, 2).

3. Rotation 90° clockwise about origin

cos(-90°) = 0 and sin(-90°) = -1

x' = xcos(-90°)  -  ysin(-90°) =  y

y' = ycos(-90°) + xsin(-90°) =  -x

The rule is then (x, y) ⟶ (y, -x).

F: (1, -5) ⟶ (-5, -1)

H: (-2, -3) ⟶ (-3, 2)

U: (-4, -5) ⟶ (-5, 4)  

The vertices of F'H'U' are (-5, -1), (-3, -2), and (-5, 4).

4. Rotate 180° about origin

The rule is (x, y) ⟶ (-x, -y).

J: (1, -1) ⟶ (-1, 1)

V: (2, 0) ⟶ (-2, 0)

Y: (5, -3) ⟶ (-5, 3)

R: (4, -3) ⟶ (-4, 3)  

The vertices of J'V'Y'R' are (-1, 1), (-2, 0), (-5, 3), and (-4, 3).

The figures below show your shapes before and after the rotations.

7 0
3 years ago
The sum of a number, n, and a number 5 is larger than it is 41. Which of the following equations could be used to solve for the
Allisa [31]
The answer is A hope this helps
5 0
2 years ago
Nico puts some cupcakes in the oven at 8:55 they need to bake for 25 minutes. When should he take them out the oven?
Naddik [55]

Answer: 9:20

Step-by-step explanation:

After 25 minutes, Nico should take them out, so 9:20.

7 0
3 years ago
Read 2 more answers
Find the X- and y-intercept of the line -7/5x - 4y=7​
saw5 [17]

Answer:

-7 and 7

Step-by-step explanation:

4 0
2 years ago
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