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Cloud [144]
3 years ago
11

Verona is solving the equation -3+4x=9. In order to isolate the variable term using the subtraction property of equality, which

number should she subtract from both sides of the equation.
A: -4
B: -3
C: 3
D: 4
Mathematics
2 answers:
Elanso [62]3 years ago
6 0
-3+4x=9  subtract -3 from both sides 
4x=12    
x= 3 

So the answer is B: -3
DENIUS [597]3 years ago
3 0
B. -3
Because -3 - (-3) = 0
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The chart has been completed in the picture attached.

Step-by-step explanation:

Step 1:

It is given that the number of bacteria doubles every 6 hours.

So if there are 1 million now, in 6 hours there would be double that i.e. 2 million and it will go on.

Step 2:

As the first column says the number of 6-hour periods, the second column is the actual number of hours.

So the second column is multiples of 6 so the second column is filled with;

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Step 3:

The current population is calculated by multiplying the previous population by 2.

For 0 hours, the population = 3 million,

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For 12 hours, the population = 2(6) = 12 million,

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