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LenaWriter [7]
3 years ago
12

The diameter of this compact disc is 11.8cm. The hole in the middle has a area of 1.54cm2. What is the area of the plastic in th

is disc?
Mathematics
1 answer:
Shalnov [3]3 years ago
4 0
A=A_{disc}-A_{hole}\\A=\pi r^2-(1.54)\\A=\pi(5.9)^2-1.54\\A=34.81\pi -1.54\\A=109.358840271-1.54\\A=107.818840271

Area = 107.82 square inches.
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Tp 3 Work Backwards
Pachacha [2.7K]

Answer:

Your equation option is possibly in here somewhere.

Step-by-step explanation:

A = <em>C - 2</em>

B = A + 6  → A = <u>B - 6 </u>

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44 = C + B + A

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44 = 3C + 2

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3 0
2 years ago
Given that MTW = CAD, which segments are corresponding parts of the congruent triangles?
VikaD [51]

Answer: MW = CD

Explanation: It would be this way because if you wrote the triangles out, MW would be in the same place as CD, making them corresponding.

6 0
3 years ago
John the baker baked 130 pies on Wednesday, by Friday he sold 60 pies. What percentage of pies did John the baker sell? EXPLAIN
melisa1 [442]

Answer:

46.15%

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4 0
3 years ago
2.58, 2 5/8, 2.6, 2 2/3 least to greatest
8090 [49]

Answer:

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3 0
3 years ago
3.
Vitek1552 [10]
To solve this we are going to use the future value of annuity due formula: FV=(1+ \frac{r}{n} )*P[ \frac{(1+ \frac{r}{n})^{kt}-1 }{ \frac{r}{n} } ]
where
FV is the future value
P is the periodic deposit 
r is the interest rate in decimal form 
n is the number of times the interest is compounded per year
k is the number of deposits per year

We know for our problem that P=420 and t=15. To convert the interest rate to decimal form, we are going to divide the rate by 100%: r= \frac{10}{100} =0.1. Since Ruben makes the deposits every 6 months, k=2. The interest is compounded semiannually, so 2 times per year; therefore, k=2.
Lets replace the values in our formula:

FV=(1+ \frac{r}{n} )*P[ \frac{(1+ \frac{r}{n})^{kt}-1 }{ \frac{r}{n} } ]
FV=(1+ \frac{0.1}{2} )*420[ \frac{(1+ \frac{0.1}{2})^{(2)(15)}-1 }{ \frac{01}{2} } ]
FV=29299.53

We can conclude that the correct answer is <span>$29,299.53</span>
8 0
3 years ago
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