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Drupady [299]
3 years ago
6

Your baby brother has an ear infection. The doctor said there are probably 50,000 bacteria in his left ear. The penicillin the d

octor prescribed will kill 7% of the bacteria every hour. About how long will it take for there to be less than 25,000 bacteria?​

Mathematics
2 answers:
kompoz [17]3 years ago
8 0
I think it’s 9hours
slamgirl [31]3 years ago
4 0

Answer:

Ok I'm not sure but (9 hours)

Step-by-step explanation:

50,000 divided by 25,000 = 7

7 plus 2 equals 9.

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Answer: She mixed up the slope and y-intercept when she wrote the equation in step 3.

Step-by- explanation:

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8 0
3 years ago
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5 0
4 years ago
Graph the following system of equations and find where they meet 3x + 5y = 36 y = 5x - 4
Over [174]

Answer:

[2,6]

Step-by-step explanation:

3x+5y=36

5x-4=y

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4 0
3 years ago
6 = a divided by 4 + 2
lyudmila [28]

Answer:

36

Step-by-step explanation:

8 0
4 years ago
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The sum of one third of a number and five is equal to six less than the number
abruzzese [7]

Call the number : x

(1/3)x + 5 = x-6

=> (1/3)x + 5 - (x-6) = 0
=> (1/3)x + 5 - x + 6 = 0
Group (1/3)x with -x, 5 with 6

=> [(1/3)x - x] + (5+6) = 0
=> (-2/3)x + 11 = 0
=> (-2/3)x = -11
=> x = -11 : (-2/3) = 33/2.

Recheck : 1/3 x 33/2 + 5 = 33/6 + 5 = 63/6 = 21/2

33/2 - 21/2 = 12/2 = 6 (21/2 is 6 less than 33/2, satisfied.)

4 0
2 years ago
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