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jok3333 [9.3K]
3 years ago
10

A culture started with 5000 bacteria. after 7 hours, it grew to 6500 bacteria. predict how many bacteria will be present after 1

9 hours. round your answer to the nearest whole number
Mathematics
1 answer:
spin [16.1K]3 years ago
4 0

6500=7x+5000

6500-5000=7x+5000-5000

1500=7x

1500/7≈214

x≈214

y=19·214+5000

y=9066

answer=9066 bacteria

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riadik2000 [5.3K]
Ok so we have 2 equations here...

x + y = 76
1/3x + 1/2y = 34

First solve for x in the 1st equation...

x + y = 76
x = 76 - y

Now substitute 76-y for x in the 2nd equation...

1/3x + 1/2y = 34
1/3(76-y) + 1/2y = 34
76/3 - 1/3y + 1/2y = 34
-1/3y + 1/2y = 34 - 76/3
-2/6y + 3/6y = 34 - 25 1/3
1/6y = 8 2/3
y = 8 2/3 ÷ 1/6
y = 8 2/3 × 6
y = 52

Now substitute 52 into the 1st equation for y

x + y = 76
x + 52 = 76
x = 76 - 52
x = 24

The 2 numbers are 24 and 52.

The difference between the numbers is
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8 0
3 years ago
Read 2 more answers
Part A: Maci made $170 grooming dogs one day with her mobile dog grooming business. She charges $60 per appointment and earned $
Anastaziya [24]

Answer:

A. 60a + 50 = 170

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2 years ago
Please help it’s urgent !!
schepotkina [342]

Answer:

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Step-by-step explanation:

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The product of twice a number and six is the same as the difference of eleven times the number and 1/4 fine the number
solmaris [256]

Answer:

x= -1/4

Step-by-step explanation:

suppose ,

The  number is x

now,

twice a number = 2 . x = 2x

The product of twice a number and six = 2x . 6 = 12x

  [ "product" means the result of multiplication]

Then,

Eleven times the number = 11 . x = 11x

The difference of eleven times the number and 1/4 = 11x - 1/4

                                                                                       =  (44x-1)/4

Hence,

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=>48x-44x=-1         [subtract 44x on both sides]    

=>4x=-1                   [divide both sides by 4]  

=>x= -1/4                              

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3 years ago
812,000 gallons of water in an olympic training center's pool. express this number in scientific notation.
frez [133]
8.12×10^5
... i got this by taking the first number 8 and then counting the places behind the 8 which would be 5 so than you move the decimal place by 5 so you get 8.12 then you show theirs 5 places behind the 8 by adding the 10^5 so youbget 8.12×10^5
4 0
3 years ago
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