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ella [17]
3 years ago
15

Hi I really need help on this problem. Thank you!

Mathematics
1 answer:
Olin [163]3 years ago
3 0

Answer:

The circumference of a circle with radius 13.8 is 86.71

Step-by-step explanation:

Circumference of a cicle in terms of radius:

Circumference = 2·π·r = 2·3.14·13.8 = 86.71

In terms of diameter:

Circumference = π·d = 3.14·27.6 = 86.66

In terms of area:

Circumference C = √4·π·A = √4·π·598.3 = 86.71

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irina [24]

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Has to increase by 20%, so 64 is multiplied by 1 + 0.2 = 1.2. Then64*1.2 = 76.8Rounding up, 77 is the answer.

4 0
2 years ago
What is the answer to 0.7(1.5 + y) = 3.5y - 1.47
Brums [2.3K]

Answer:

0.9

Step-by-step explanation:

0.7*(1.5 + y) = 3.5y - 1.47

or, (0.7*1.5) + 0.7y = 3.5y - 1.47

or, 1.05 + 1.47 = 3.5y - 0.7y

or, 2.52 = 2.8y

or, y = 2.52/2.8

or, y = 0.9

Hope this will help. Please mark me brainliest.

4 0
2 years ago
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miss Akunina [59]
B=hm\\&#10;h=\dfrac{B}{m}
6 0
3 years ago
Help please this is my last one then I’m done and o get to do whatever I want because I’m done with my homework but I need this
Alexxandr [17]

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Step-by-step explanation:

3 0
3 years ago
86 into scientific notation
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3 years ago
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