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Nady [450]
3 years ago
15

Circle O is shown. Secant A C intersects tangent C D at point C outside of the circle. Secant A C intersects circle O at point B

and tangent C D intersects circle O at point D. Point E is on arc A D. Angle A C D is 57 degrees.
Aaron is standing at point C, watching his friends on a Ferris wheel. He knows that he is looking up at a 57° angle and the measure of arc BD is 80°. What is the measure of arc AED?

°
Mathematics
1 answer:
Vlada [557]3 years ago
8 0

Answer:

h

Step-by-step explanation:

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Simplify this expression<br> 2\3(-9m+ 12)
Nastasia [14]
So with the 2/3 you factor out the 3 from the expression by multiplying 3, which cancels out the bottom number 3 and leaves you with 2(-3m+4). You then distribute 2 through the parenthesis which gives you the answer -6m+8 <span />
5 0
4 years ago
Identify BR rounded to the nearest tenth. HELP PLEASE!!
ahrayia [7]

Answer:

<h2>BR ≈ 49.0</h2>

Step-by-step explanation:

Use cosine:

cosine=\dfrac{adjacent}{hypotenuse}

We have

adjacent=42\\hypotenuse=BR\\\alpha=31^o

\cos31^o\approx0.8572

Substitute:

\dfrac{42}{BR}=0.8572

\dfrac{42}{BR}=\dfrac{8,572}{10,000}          <em>cross multiply</em>

8,572BR=420,000                <em>divide both sides by 8,572</em>

BR=\dfrac{420,000}{8,572}

BR\approx49.0

5 0
3 years ago
Towns A and B are 400 miles apart. If a train leaves A in the direction of B at 50 miles
Amiraneli [1.4K]
From A :50/hour. *x(hour)
From B : 30/hour *x(hour)
50 *x +30 *x =400
80 *x=400
x=5(hour)
Then the train from A will make 50 *5=250 miles
(These is fisik)
8 0
3 years ago
Read 2 more answers
0.00000018 in scientific notation
Naddik [55]

Answer:

1.8 \times  {10}^{ - 7}

Step-by-step explanation:

0.00000018 = 1.8 \times  {10}^{ - 7}  \\

8 0
3 years ago
There are 12 face cards in a deck of standard playing cards and 20 even numbered cards (2; 4; 6; 8; 10 in each suit). what is th
FromTheMoon [43]
The probability of drawing a face card is 12/52
the probability of drawing an even number is 20/52
face cards and even numbered cards do not overwrap, so no need to subtract anything
Add up: 12/52+20/52=32/52=0.6154
5 0
3 years ago
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