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Anit [1.1K]
3 years ago
12

PLEASE HELP ME I BEG IMMA FAILLLLLLLLLLLLLLLL

Mathematics
2 answers:
romanna [79]3 years ago
8 0

Answer: 3.5"

64:80::2.8":x

\frac{64}{80}\frac{2.8}{x}    

2.8x80=224

224/64=3.5"

jasenka [17]3 years ago
6 0

Answer:

3.5

Step-by-step explanation:

that's what the other dude said

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3 years ago
What are the first five terms of the recursive sequence
Sedaia [141]

Answer: Choice D

9, 30, 93, 282, 849

============================================================

Explanation:

The notation a_1 = 9 tells us that the first term is 9

The notation a_n = 3*(a_{n-1})+3 says that we multiply the (n-1)st term by 3, then add on 3 to get the nth term a_n

So if we wanted the second term for instance, then we'd say

a_n = 3*(a_{n-1})+3\\\\a_2 = 3*(a_{2-1})+3\\\\a_2 = 3*(a_{1})+3\\\\a_2 = 3*(9)+3\\\\a_2 = 27+3\\\\a_2 = 30\\\\

If we want the third term, then,

a_n = 3*(a_{n-1})+3\\\\a_3 = 3*(a_{3-1})+3\\\\a_3 = 3*(a_{2})+3\\\\a_3 = 3*(30)+3\\\\a_3 = 90+3\\\\a_3 = 93\\\\

and so on.

The terms so far are: 9, 30, 93

You should find the fourth and fifth terms are 282 and 849 respectively if you keep this pattern going.

Therefore, the answer is choice D

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JulsSmile [24]
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Tickets to the zoo cost $14 for adults and $10 for children. A group of 12 people went to the zoo, and the tickets cost $140. Th
hjlf
 x is the number of adults and y is the number of children.
   x + y = 12
<span>14x + 10y = 140
lets multiply the first equation by -10 and then add it to the second equation:
-10x - 10y = -120
</span>14x + 10y = <span>140
</span>-----------------------
4x + 0 = 20
x = 20/4
x = 5
then substitute in the original equation:
x + y = <span>12
</span>5 + y = <span>12
</span>y = 12 - 5
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Does 37 divided 18 mean 18 is less than 37
GalinKa [24]
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3 years ago
Read 2 more answers
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