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anastassius [24]
3 years ago
14

A circle with circumference 20 has an arc with a 72 degrees central angle. What is the length of the arc?

Mathematics
1 answer:
siniylev [52]3 years ago
7 0

Step-by-step explanation:

Length of arc

=  \frac{ \theta}{360 \degree}  \times c \\  \\  =  \frac{72 \degree}{360 \degree}   \times 20\\  \\  = \frac{1}{5}   \times 20 \\  \\  = 4 \: units \\

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ehidna [41]
If 1cm equals 1000 millimeters, then multiply 7 by 1000 and you will get your answer. 7 times 1000 equals 7,000 millimeters.

7*1000
Multiply
Final Answer: 7,000
7 0
4 years ago
You want to be able to withdraw $4000 a month for 30 years how much would you need to have in your account with an APR of 3.4% t
tigry1 [53]

Answer:

  $904,510.28

Step-by-step explanation:

If we assume the withdrawals are at the beginning of the month, we can use the annuity-due formula.

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where r is the APR, n is the number of times interest is compounded per year (12), A is the amount withdrawn, and t is the number of years.

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8 0
3 years ago
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lara31 [8.8K]

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6 0
3 years ago
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Melanie used 864 beads to make 5 bracelets put the .she put the same number of beads on each bracelet. How many beads does each
Yanka [14]

Answer:

172

Step-by-step explanation:

864 / 5 = 172.8

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7 0
3 years ago
Given the function f(x)=x2+2x+1, find:<br><br> f( (2a−3)/5 ) =<br><br> Show working please!
Rina8888 [55]
<h3>Given</h3>
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<h3>Find</h3>
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<h3>Solution</h3>

It can be convenient to rewrite f(x) as a square, then do the substitution. That way, the algebra is simplified a little bit.

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... f((2a-3)/5) = ((2a-3)/5 +1)² = ((2a -3 +5)/5)²

... = (2/5(a+1))²

... f((2a-3)/5) = (4/25)(a² +2a +1)

7 0
3 years ago
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