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san4es73 [151]
3 years ago
11

A circle has an area of 144 cm2.Find the circumference

Mathematics
1 answer:
lara [203]3 years ago
5 0
Circumference of Circle = 2πrArea of circle = πr²144 = 3.14 * r²r² = 144/3.14r² = 45.85r = √45.85r = 6.77 Circumference = 2πr = 2*3.14*6.77Circumference = 42.51 m²
So, your answer is 42.51 m²


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kondor19780726 [428]

Answer:

106.6 %.

Step-by-step explanation:

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7 0
3 years ago
The explicit rule for a sequence is an=5(−2)^n−1
Murrr4er [49]

Answer:

3) a_n=-2a_{n-1}, a_1=5

Step-by-step explanation:

Given that the explicit rule for a sequence is a_n=5(-2)^{n-1}.

Now we need to find about what is the recursive rule for the sequence and match with the given choices to find the correct choice.

1) a_n=-2a_{n+1}, a_1=5

2) a_n=-5a_{n+1}, a_1=2

3) a_n=-2a_{n-1}, a_1=5

4) a_n=-5a_{n-1}, a_1=2

Plug n=1 into given formula to get first term

a_n=5(-2)^{n-1}

a_1=5(-2)^{1-1}=5(-2)^{0}=5(1)=5

base of the exponent part is (-2) so that means we need to multiply -2 to the previous term to get nth term

Hence correct choice is: 3) a_n=-2a_{n-1}, a_1=5

7 0
3 years ago
7. The value of y varies directly with x, and y = 8 when x = 2.<br> Find y when x = 10.
lesya692 [45]
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3 years ago
How many buttons did Anne sew?<br> Rate: 8 buttons per minute Time: 7 minutes
olganol [36]

Answer:

42 buttons

Step-by-step explanation:

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Hope that helped have a nice day

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Read 2 more answers
Answers :
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The correct answer is B
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3 years ago
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