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
Anon25 [30]
3 years ago
15

In the circle below, chord AB passes through the center of circle 0. If the radius OC is perpendicular to chord AB and has lengt

h of 7 centimeters,
what is the length of chord BC, to the nearest tenth of a centimeter?
A. 5.3
B. 7.0
C. 9.9
D. 12.1
E. 14.0

Mathematics
1 answer:
Airida [17]3 years ago
7 0

Answer:

Option (C)

Step-by-step explanation:

In the given circle, AB is a chord passing through the center O.

Therefore,chord AB is a diameter of the circle and OC is the radius.

AO = OB = OC

OC⊥AB, and length of OC = 7 cm

By applying Pythagoras theorem in right ΔBOC,

BC² = OC² + OB²

BC = \sqrt{OC^{2}+OB^{2}}

     = \sqrt{7^2+7^2}

     = 7\sqrt{2}

     ≈ 9.9 units

Therefore, Option (C) will be the answer.  

You might be interested in
What is the slope-intercept form of the function that contains the point (6, 2) and has a slope of 3?
solong [7]
The general formula: y=mx+b

(6,2) ⇒ x=6,y=2
m=3
b=?

2=3*6+b
2=18+b
b=-16

<u>y=3m-16</u>
7 0
3 years ago
Daniel is completing a home project. He needs 13 pieces of wood, each 112 feet long, to complete the project. How much wood does
snow_lady [41]

13 x 112 = 1456 ft

112 ft x 8 = 896

Only needs 8 pieces

4 0
3 years ago
What is the sum of?<br><br> A. S=1.5<br> B.S=2<br> C.S=4.5<br> D.=8
sweet [91]
8.  You can graph this or use the summation function on the TI computer. 
5 0
2 years ago
Read 2 more answers
Given the function defined in the table below, find the average rate of
AURORKA [14]

Answer:

Average rate of change = \frac{2}{5}

Step-by-step explanation:

Average rate of change of a function 'f' in the interval a ≤ x ≤ b is given by,

Average rate of change = \frac{f(b)-f(a)}{b-a}

We have to find the average rate of change in the interval 20 ≤ x ≤ 65

From the table attached,

f(65) = 32

f(20) = 14

Average rate of change = \frac{32-14}{65-20}

                                        = \frac{18}{45}

                                        = \frac{2}{5}

Therefore, average rate of change in the given interval is \frac{2}{5} .

7 0
3 years ago
Mr. Vazquez determines that the area of a bathroom in his house is 25 square feet less than 1/5 of the area of the living room.
kozerog [31]
Answer is 300 square feet

5 0
3 years ago
Other questions:
  • The length of a rectangle is one unit shorter than one-sixth of the width, x.
    10·2 answers
  • Glenda wants to paint the exterior lateral surface of her house. It is eight feet high and has a perimeter of 120 feet. Each gal
    11·2 answers
  • Which is equation of an ellipse of an ellipse with directrices at x=4 and foci at (2,0) (-2,0)
    8·1 answer
  • From a group of 8 people 5 will each win $1,000 how many different winning groups are possible
    12·1 answer
  • What is a quart of function with only the two real zeros given? x = -4 and x = -1
    12·1 answer
  • Which inequality represents the expression 9 is less than or equal to b
    13·2 answers
  • Use the clues to find the mystery number. The mystery number is –
    12·2 answers
  • Help me in this question<br>who can solve everything the fastest ​
    10·1 answer
  • A. 126<br>B. 54<br>C. 71<br>D. 109
    5·1 answer
  • Holly has $225 to spend at the shopping mall. She decides to buy sweaaters and pants with her money. Sweaters cost $45 each and
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!