1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veronika [31]
3 years ago
14

1. AB is tangent to circle O at B. The diagram is not drawn to scale. . . circle O. . If AB = 9 and AO = 21.6, what is the lengt

h of the radius (r)? Round the answer to the nearest tenth. A. 19.6. B.15.3*. C.23.4. D.12.6. 2. JK, KL, and LJ are all tangent to circle O. The diagram is not drawn to scale. . . triangle JLK with an inside circle O. . If JA = 12, AL = 15, and CK = 5, what is the perimeter of ΔJKL? (1 point). 34. 64 *. 32. 54. 3. WZ and XR are diameters of circle C. The diagram is not drawn to scale. . . . . What is the measure of ____ A. 355º. B.5º. C. 292º. D.243º.

Mathematics
2 answers:
olganol [36]3 years ago
8 0
1) The correct answer is A) 19.6

See the first picture attached.

A line tangent with a circle (AB) forms a 90° angle with the radius drawn from the tangent point (BO). This means that you can apply the Pythagorean theorem:
BO = √(AO² - AB²)
      = √(21.6² - 9²)
      = √(466.56 - 81)
      = √385.56
      = 19.6

2) The correct answer is B) 64

See the second picture attached.

When you have an incircle (a circle inscribed in a triangle), the distances between a vertex and the two nearest tangent points are equal to each other.

This means that:
JA = JB
LA = LC
KC = KB

Therefore the perimeter of ΔJKL will be: 
2 × (12 + 15 + 5) = 64

3) The question asks for the measure of arc ZWX
The correct answer is D) 243°

See the third picture attached.

We know that a diameter forms an arc of 180°, because it divides the circle into two equal parts.

Therefore, arc ZRW measures 180°.

In order to find arc ZWX you need to add arc ZRW and arc WX:
ZWX = ZRW + WX
         = 180 + 63
         = 243°

ArbitrLikvidat [17]3 years ago
6 0
The answers are :
A) 19.6
B) 64
D) 243°

You might be interested in
4/7 dos associados de um determinado clube são homens. Se há 5.100 mulheres associadas quantos são os sócios?
Citrus2011 [14]
Si make sure you dont mess up addin g5?0
8 0
2 years ago
Read 2 more answers
David averaged 12 points per game during his 7th grade basketball season. As a result of practicing all summer, he averaged 20 p
Nataly [62]

Answer:

20-12=8 the answer is 8 I did the math

8 0
3 years ago
Read 2 more answers
What is 36.495 in expanded form
guapka [62]
30+6+0.4+0.09+0.005=36.495
4 0
3 years ago
Read 2 more answers
How is the answer 35? How do I get it?
vlabodo [156]
I think it's -35. The steps to get that number is subtracting the 3 to the right side. Then you have -2 - 3 which equals to -5. Then you still have x/7= -5. Get rid of 7 from the x and do the same thing to the other side but you multiply 7 and -5. Last you your would be x= -35.
7 0
3 years ago
The science club at Jersey High School is sponsoring a dance to raise money for their spring project. They will charge $4 per st
Dennis_Churaev [7]

Answer: 195

Step-by-step explanation:

Cost per student = $4

Total number who attended = n

The cost of the total of student who attended will be cost per student multiplied by the total number of students, that is

Total cos = 4n

Since, they are to pay $140 , for publicity, then the total cost becomes

T = 4n - 140

From the last statement

4n - 140 ≥ 640

4n ≥ 640 + 140

4n ≥780

n ≥ 780/4

n ≥ 195

That means at least 195 students must attend if the science club is to earn at least $ 640

6 0
2 years ago
Other questions:
  • What is the next patter for 4.5,9,13.5,18
    7·1 answer
  • Need help with this​
    6·1 answer
  • Aluminum usage in automobiles has been climbing steadily. As recently as 1990, there were no aluminum-structured passenger cars
    15·1 answer
  • plz help Pru, Piper, and Phoebe share spices in the ratio 5:3:4. If Pru has 24 more spices than Piper, how many spices does Phoe
    13·2 answers
  • Help!!!! and fast. −6+5(y+3)−2y
    11·1 answer
  • NEED HELP! GIVING POINTS!
    14·2 answers
  • 7. Estimote the following percentages of 60.<br> 10% =<br> 25% =<br> 50% =<br> 20% =
    5·2 answers
  • 15
    12·1 answer
  • Will the square of a negative number always be positive? Explain why.
    6·2 answers
  • Please help! To solve the equation 1.75n = 7 for n, what operation must be applied to both sides in order to isolate the variabl
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!