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Flauer [41]
3 years ago
8

Please help badly!!!!!!! I am failing and it is a very important test PLEASE PLEASE PLEASE

Mathematics
1 answer:
lakkis [162]3 years ago
8 0
Circumference=2*pi*r or pi*d so if its 16pi you know that your diameter is 16 wich means your radius is 8 because d/2 is your radius. plug the 8 into the area formula wich gives you the formula pi*8^2. 8squared is 64. 64 times pi is 201. <span>or 64pi wich is the area of the same circle with the circumfernce of 16pi

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Solve for d.<br> d•3/10=1/4
vladimir2022 [97]

Answer:

5/6

Step-by-step explanation:

Multiply both sides of equation by 10/3.

d = 1/4 × 10/3

d = 10/12 = 5/6

7 0
2 years ago
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Two terms of an arithmetic sequence are a10=16 and a35=66 find the sum of the first 75 terms
andrew11 [14]

The sum of the first 75 terms of the arithmetic sequence that has 10th term as 16 and the 35th term as 66 is 5400.  

<h3>How to find the sum of terms using Arithmetic sequence formula</h3>

aₙ = a + (n - 1)d

where

  • a = first term
  • d = common difference
  • n = number of terms

Therefore, let's find a and d

a₁₀ = a + (10 - 1)d

a₃₅ = a + (35 - 1)d

Hence,

16 = a + 9d

66 = a + 34d

25d = 50

d = 50 / 25

d = 2

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a = 16 - 18

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Therefore, let's find the sum of 75 terms of the arithmetic sequence

Sₙ = n / 2 (2a + (n - 1)d)

S₇₅ = 75 / 2 (2(-2) + (75 - 1)2)

S₇₅ = 37.5 (-4 + 148)

S₇₅ = 37.5(144)

S₇₅ = 5400

learn more on arithmetic sequence here: brainly.com/question/1687271

4 0
2 years ago
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Sonja [21]
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7 0
3 years ago
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Allisa [31]
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1/5280= 4.25/x This is a proportion. 
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4 1/4 miles= 22440 feet

Hope this helps! :D
7 0
3 years ago
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san4es73 [151]

Answer:

A

Step-by-step explanation:

It is correct

6 0
1 year ago
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