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Gala2k [10]
3 years ago
10

I need help finding this angle! I will mark you if you help!

Mathematics
2 answers:
Stella [2.4K]3 years ago
8 0

Answer:

Acute angle

Step-by-step explanation:

Lady_Fox [76]3 years ago
4 0

It's an acute angle because it's smaller than 90 degrees and isn't a straight line.

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The figure below shows concentric circles, both centered at 0.0
Rama09 [41]

Answer:

  C.  18 cm

Step-by-step explanation:

The ratio of the sides of the triangle shown is 12 : 15 = 4 : 5. We know it is a right triangle, so we know the missing side length completes the ratio

  3 : 4 : 5 = 9 : 12 : 15

Half of XY is 9 cm, so the length of the entire chord is 18 cm.

_____

The chord is tangent to the inner circle, so makes a 90° angle with the radius to that tangent point. This tells you that the triangle shown is a right triangle. It also tells you that the short radius bisects the chord. The Pythagorean theorem can be used to find the length of the side not shown (half the chord length).

The unknown side (a) can be found from  ...

  15² = 12² +a²

  225 -144 = a² . . . . . . subtract 12²

  81 = a² . . . . . . . . . . .  simplify

  9 = a . . . . . . . . . . . . . take the square root

The chord length is 2a, so is ...

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7 0
3 years ago
A Ferris wheel has a diameter of 50 meters and makes one revolution every 15 minutes
Anni [7]

Answer:

18

Step-by-step explanation:

3 0
2 years ago
Which of the following expresses the coordinates of the foci of the conic section shown below?
sergiy2304 [10]

Answer: I can’t solve (x+2)^2/64+(y-1)^2/81=1 but I solve (x+2)^2/64+(y-1)^2/81 it the same thing but I take out the =1

Step-by-step explanation: look at the picture and you see me answer, hope this help:)

3 0
3 years ago
A square in the board below and a letter in the word ATTENTION is chosen at
kolezko [41]

Answer:

4 /15

Step-by-step explanation:

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Count of T's in attention = 3

P(choosing T) = 3 / 9 = 1/3

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5 0
2 years ago
Which equation would find the distance between the
Andreyy89

Step-by-step explanation:the answer is c i promise

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3 years ago
Read 2 more answers
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