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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.  

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ki77a [65]

Answer:

Therefore his new balance=$712.95

Therefore his new balance is  =$ 930.44  

Step-by-step explanation:

Darnell starts the month $ 952.43 in his checking account.

He buys an iPhone 7 for $ 217.49 with tax included and two kindle books that each $7.99.

The price of two books is =$(7.99× 2)= $ 15.98

Total amount that he paid for iPhone 7 and two books is =$(217.49+15.98)

                                                                                              =$233.47

Therefore his new balance = $(952.43- 233.47)

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The new iPhone 7 is not as awesome as promised , and Darnell returns it.

He will get the price of iPhone refund.

Therefore his new balance is $(712.95+217.49)

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8 0
3 years ago
How do you solve 3|4x+2|=6
dolphi86 [110]

Answer:

x= 0, -1

Step-by-step explanation:

4 0
3 years ago
A small tree is 80 cm tall.
ruslelena [56]
1.2 meters = 120 centimeters
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There was a 50% increase.
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What is the slope of the line that passes through the points (1,7) and (-4,-8)?
Aleksandr [31]

Answer:

D. 3

Step-by-step explanation:

To find the slope of a line, we can use the equation y2-y1/x2-x1=m or slope.

All we can do now is insert the values of the points into the equation.

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3=m

Thus, the slope is 3.

Hope this helps!

5 0
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