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Oksi-84 [34.3K]
3 years ago
6

How to solve for the variable which is r

Mathematics
2 answers:
devlian [24]3 years ago
5 0
I think, not 100% sure, but I think it is square root (A/4pi)=r
elena55 [62]3 years ago
5 0
The x is the r because x is the variable and r is a variable
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Whitepunk [10]

Answer:

300=initial time and 0.05 is the amount of time shaved off of the initial time to run the marathon

Step-by-step explanation:

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What does 3 (2x - 4) = 8x 14 equal?
jeka57 [31]
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5 0
3 years ago
Please help.
Alika [10]

Answer:

250 smaller boxes

Step-by-step explanation:

Find the volume of the 2 cuboids.

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3 years ago
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3 0
3 years ago
ILL GIVE BRAINLIEST! PLEASE HELP I DONT UNDERSTAND!
blsea [12.9K]

Answer:

S₁₅ = 645

Step-by-step explanation:

The sum to n terms of an arithmetic sequence is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Using the nth term formula a_{n} = 5n + 3 , then

a₁ = 5(1) + 3 = 5 + 3 = 8

a₂ = 5(2) + 3 = 10 + 3 = 13 , then

d = a₂ - a₁ = 13 - 8 = 5

Thus

S₁₅ = \frac{15}{2} [ (2 × 8) + (14 × 5) ]

     = 7.5( 16 + 70)

     = 7.5 × 86

     = 645

7 0
2 years ago
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