Distance of chord AB from the centre of a circle is 8cm. Length of the chord AB is 12cm. Find Radius of the circle.​

4 or 6 cms

Step-by-step explanation:

its a chord goin from the center of the circle so its a diameter so the half of it is its radius so u can divide so ans is 4 cm or els 6 cm

answer:

10 cm

Step-by-step explanation:

originally answered: a sequence is defined recursively using the formula f (n + 1) = –0.5 f(n). if the first term of the sequence is 120, what is f(5)?

your question can be rewritten as:

a sequence is defined recursively as follows:

if n = 1, then f(n) = 120

else if n > 1, then f(n) =-.5f(n-1) . what is f(5)?

here are three ways to get the answer:

(i) using hand calculations:

f(1) = 120

f(2) = -.5f(1) = -.5(120) = -60

f(3) = -.5f(2) = -.5(-60) = 30

f(4) = -.5f(3) = -.5(30) = -15

f(5) = -.5f(4) = -.5(-15) = 7.5

therefore the 5th term of the sequence is 7.5

a derived formula from method (i) is :

f(n) = )^(n-1)*120 for n > 1.

(ii) using the derived formula:

f(5) = )^4*120 = 7.5

(iii) using a python (2.7) program with a recursive function:

print "program to find the 5th term of a sequence defined recursively: "

print " f(1) = 120, and f(n) = -.5f(n-1) for n > 1."

def f(n):

if n == 1:

return 120

else:

if n > 1:

return -.5*f(n-1) # recursive call to

print""

print "your answer is: ", f(5)

the program output:

program to find the 5th term of a sequence defined recursively:

f(1) = 120, and f(n) = -.5f(n-1) for n > 1.

your answer is: 7.5

of course, you can modify the program to find any term of the sequence.

good luck

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answer:

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