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VLD [36.1K]
3 years ago
10

Which expression is equivalent to 1/2x+(−7)−2 1/4x−(−2)?

Mathematics
1 answer:
aleksley [76]3 years ago
3 0

Answer:

A

Step-by-step explanation:

because A is the correct anwer

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Determine if f(x)= x + 12/ x is even, odd, or neither
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F(-x)=-x+(12/-x)=-x-12/x
odd function
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Y/2*4-10/x+6 where x=5 and y=16
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(16)/(2)*4-(10)/(5)+6= 36

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Is 4.7 a rational number?
PIT_PIT [208]

Answer:

Yes.

Step-by-step explanation:

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Hope it helps!!

Let me know if I'm wrong...

7 0
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Read 2 more answers
PLEASE HELP IS LINEAR INEQUALITIES !!
SashulF [63]

Answer:

THE ANSWER IS C

Step-by-step explanation:

BECAUSE BABABOOEEE

8 0
3 years ago
Isabella save 2 nickels today, if she doubles the number of Nicole, she saves every day, how many days, including today, will it
Elden [556K]

Answer:

  8 days

Step-by-step explanation:

On day 8, Isabella will save 256 nickels, bringing her total to 510.

_____

The number of nickels saved on day n is 2^n. The total is 2^(n+1)-2.

_____

The above can be written down from your knowledge of binary sequences. If you want a more formal development, read on.

__

The number of nickels saved on day n is a geometric sequence with first term 2 and common ratio 2. The n-th term of the sequence is ...

  an = a1·r^(n-1) = 2·2^(n-1) = 2^n

The sum of n terms of the sequence is ...

  S = a1(r^n -1)/(r -1) = 2(2^n -1)/(2-1)

  S = 2^(n+1) -2

__

We want S > 500, so ...

  500 < 2^(n+1) -2

  502 < 2^(n+1)

  251 < 2^n

  log(251) < n·log(2)

  n > log(251)/log(2)

  n > 7.97 . . . . . . . . 8 days or more to save more than 500 nickels

3 0
3 years ago
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