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bazaltina [42]
3 years ago
5

WILL GIVE BRAINLIEST!!!!

Mathematics
1 answer:
aniked [119]3 years ago
4 0
It’s 57.66. 50.54+3.8+3.32
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Please help there is a picture and if you don’t know it please don’t answer.
FinnZ [79.3K]

Answer:

she purchased 6 first class tickets and 2 normal tickets

Step-by-step explanation:

4 0
3 years ago
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What is the square root of 175
ankoles [38]

the square root of a number is: one number times itself equals that number. Confusing '-' An example is the square of 4 is 2 because 2 times 2 = 4, or the square root of 56 is 8 because 8 times 8 is 64. The square root of 175 is about 13.22875 because 13.22875 times 13.22875 = about 175
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3 years ago
The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).
lesantik [10]

Answer:

(a).

S_{n} =  \frac{n}{2} (4n + 20) \\  \\S _{n - 1} =  \frac{(n - 1)}{2} (4n - 4 + 20) \\  \\ S _{n - 1} =  \frac{(n - 1)}{2} (4n + 16) \\  \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2}  \\   \\  { \boxed{S _{n - 1} =  {2 {n}^{2} + 6n - 8}}} \\

(b).

from general equation:

S _{n - 1} =  \frac{(n - 1)}{2} (4n + 16)

first term is 4n

common difference:

16 =  \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d =  \frac{16}{n - 2}

8 0
3 years ago
There are 108 flights from an airport, 20 of which are longer than 3 hours. The flight from this airport will be randomly chosen
andrew-mc [135]
20 / 108 reduces to 5/27
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3 years ago
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What is the exact volume of the cylinder
tatiyna

Answer:

1017.88

Step-by-step explanation:

V=πr2h=π·6^2·9≈ 1017.87602

8 0
3 years ago
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