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krok68 [10]
3 years ago
12

A central angle of a circle intercepts an arc of length 18 centimeters. The radius of the circle is 9 centimeters. What is the m

easure of the central angle in radians?
Mathematics
1 answer:
WITCHER [35]3 years ago
5 0

Answer:

.44444444

Step-by-step explanation:

πr²=full circumference

18/π(9)²=x/2π

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2x 10 = 4x - 1

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y = 2(-9/2) -10
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Find the value of x.
Tatiana [17]

Answer: The answer is x = 6 units.

Step-by-step explanation: Please refer to the attached diagram

The diagram in the question shows two triangles placed on each other and for convenience sake has been labelled ABDCE. Triangle ABC is a right angled triangle, and so is triangle ADE. From the marks on the lines, we can infer that line AD is equal in measurement to line DB. Also line AE is equal in measurement to line EC.

Therefore we can see the similarity in both triangles, if AD and AE equals DB and EC, then it follows that DE equals BC.

Hence if AD = DB and

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Then, x - 3 = ½x

(½x can also be expressed as x/2)

x - 3 = x/2

By cross multiplication we now have

2(x - 3) = x

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By collecting like terms we now have

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8 0
3 years ago
Rosa and Hercules are collecting chandeliers in a ratio of 10:8. If they collected 270 chandeliers altogether, how many chandeli
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A box contains plain pencils and pens. A second box contains color pencils and crayons. One item from each box is chosen at rand
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Answer:

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