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UNO [17]
3 years ago
7

Please help. Answer 4 and 5, please

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
3 0
Asked and answered elsewhere.
brainly.com/question/8586522
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Your friend is wrapping 1 meter of twine around a spool with a 2-centimeter diameter. The spool is thin and accommodates only on
Kazeer [188]

Answer:

a) 6 complete times

b) 19.3%

Step-by-step explanation:

In every turn, the diameter of the twine increases 1 cm.

After the first turn, there is a total wrapped of 3.14*2=6.3 cm.

After the second turn, we have wrapped 6.3+3.14*(2+1)=15.7 cm.

If we continue with these algorithm, we have that after the 6th turn we have 84.8 cm wrapped. <em>This is the last complete turn.</em>

T = 0 D = 2 cm. Wrapped = 6.3 cm. Total wrapped = 6.3 cm.

T = 1         D = 3 cm. Wrapped = 9.4 cm. Total wrapped = 15.7 cm.

T = 2 D = 4 cm. Wrapped = 12.6 cm. Total wrapped = 28.3 cm.

T = 3 D = 5 cm. Wrapped = 15.7 cm. Total wrapped = 44 cm.

T = 4 D = 6 cm. Wrapped = 18.8 cm. Total wrapped = 62.8 cm.

T = 5 D = 7 cm. Wrapped = 22.0 cm. Total wrapped = 84.8 cm.

T = 6 D = 8 cm. Wrapped = 25.1 cm. Total wrapped = 110 cm.

There are left (100-84.8) = 15.2 cm to wrap around the twine, which has a 25.1 cm diameter by now.

The perimeter of the twine is 3.14*25.1=78.8 cm.

The percentage of a complete circle that the last wrapping of the twine will make is:

P = 15.2/78.8 = 0.193 = 19.3%

4 0
3 years ago
What is 60 - 56 divided by 8•2 will give brainliest
Paladinen [302]

Answer:

1/4

Step-by-step explanation:

if you subtract the top, and multiply the bottom, the outcome is 4/16 or 1/4

4 0
3 years ago
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Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the l
Mariana [72]
5ft and 4 in??? I'm not sure but check tho
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3 years ago
How do I find 75% of 1 meter?
densk [106]
You turn the percentage to a decimal which is 75%=0.75
6 0
3 years ago
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the first 10 games played of the football season how many outcome possibilities are there if the total score of each game is ove
Dmitry_Shevchenko [17]
300 total point
since there r 10 games and 30 points fatal each game then it’s 300
5 0
3 years ago
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