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ludmilkaskok [199]
3 years ago
11

Triangle ABC maps to triangle XYZ by a rotation of 90∘ counterclockwise about the origin followed by a reflection across the lin

e y=x. In triangle ABC, m∠A=45∘, m∠B=55∘, and m∠C=80∘.
What is the measure of ∠Y?
Enter your answer as the correct value, like this: 42
Mathematics
2 answers:
VikaD [51]3 years ago
5 0

Answer:123

Step-by-step explanation:

Add

eduard3 years ago
3 0

Answer:

55

Step-by-step explanation:

You might be interested in
A seat on a Ferris wheel is level with the center of the wheel. The diameter of the wheel is 210 feet (ft). If the wheel
frutty [35]

Answer:

The change in the height of the seat of the Ferris wheel is a reduction in height of approximately 74.25 feet

Step-by-step explanation:

The given information are;

The position of the seat on the Ferris wheel = The center level of the wheel

The diameter of the Ferris wheel = 210 feet

The angle of rotation of the wheel = 45° counterclockwise

The height of a point on the Ferris wheel is given by the relation;

h = A·cos(b·x + c) + d

With regards to the question, we have;

h = The height of the seat of the Ferris wheel

A = The amplitude = 1/2 × The diameter of the wheel = 210/2 = 105 feet

360/b = The period

c = The phase shift = 90°

d = The mid line = 0

For a rotation of 45° counterclockwise or-45° clockwise, we have;

b·x = 45°, therefore;

h  = 105 × cos(45° + 90°) + 0 = 105 × cos(135°) + 0

h = 105 × cos(135°) ≈ -74.25 feet

Therefore, the height of the seat of the Ferris wheel reduces by 74.246 feet.

6 0
3 years ago
I neeeeeeeeeeeeeed help
masya89 [10]

9514 1404 393

Answer:

  14 +2i

Step-by-step explanation:

For this sort of problem, you can treat i as though it were a variable. Combine like terms.

  (8 -7i) +(6 +9i) = (8 +6) +(-7 +9)i

  = 14 +2i

7 0
3 years ago
Please Help I'm not really good at math
UkoKoshka [18]

The true statements about the triangles RST and DEF are: (a), (d) and (e)

<h3>How to determine the true statements?</h3>

The statement ΔRST ≅ ΔDEF means that the triangles RST and DEF are congruent.

This above implies that:

  • The triangles can be mapped onto each other by rigid transformations such as reflection, translation and rotation
  • The transformation does not include dilation
  • Corresponding sides are congruent

The above means that the possible true statements are: (a), (d) and (e)

Read more about transformation at:

brainly.com/question/4289712

#SPJ1

3 0
2 years ago
Helppppppppppppppppppppppppp
Wewaii [24]

Answer:

Radius: 8

Circumference: 50.27

πr^2 = Area of circle

201.06 = πr^2

divide by pi

201.06 / π = 63.9993857161 = 64

64 = r^2

Square root both sides to get radius.

\sqrt{64} = 8

r = 8

Circumference = π x diameter

Diameter = 2 x radius

Circumference = π x 16 = 50.2654824574 = 50.27

8 0
3 years ago
1.5c - 6 = 7.5 i need help with this problem and i have no one to help me
Lostsunrise [7]

Answer:

c=9

Step-by-step explanation:

Let's solve your equation step by step:

  1. add 6 on both sides
  2. divide 1.5 from the product of 6 and 7.5 (aka 13.5)
  3. you will get C
  4. put 9 in for C.
<h2>1.5c-6=7.5</h2>

1. 1.5c-6+6=7.5+6

1.5 1.5c=13.5

2.\frac{1.5c}{1.5c}=\frac{13.5}{1.5c}

3. C=9

1.5(9)-6=7.5

13.5-6=7.5

6 0
2 years ago
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