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2 years ago

Atown uses positive numbers to track increases in population and negative numbers to track decreases in population.

Mathematics

1 answer:

amid [387]2 years ago

4 0

Answer:

Step-by-step explanation:

-60

Step-by-step explanation:

Increase in population is given by positive sign

Change in population in 5 years = -300

Decrease in population is represented by negative sign

Change in population in 1 year = -300\5

= -60

Town's population faces a decrease of 60 residents each year.

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An electrician charges $322 for 7 hours of work. How much does the electrician charge for one hour?

In-s [12.5K]

Answer:

About 46 dollars an hour

Step-by-step explanation:

322/7 = 46

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3 years ago

Evaluate the expression 9x , when x= 4, 7, and 2.5

satela [25.4K]

Step-by-step explanation:

When x = 4,

9x=9×4=36

When x = 7,

9x = 9×7 =63

When x = 2.5

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2 years ago

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A scientest is studying a new super bacteria that is threatening to cause an outbreak. On the first day, there were 5 organisms

ElenaW [278]

Answer:

C. 125

Step-by-step explanation:

Given:

Bacteria on day 1 = 5

On day 2, each bacteria got split into 5.

So, number of bacteria on day 2 = $5\times 5 = 25$

Now, again on day 3, each of the 25 bacteria got split into additional 5 bacteria.

So, number of of bacteria on day 3 = $25\times 5 =125$

Therefore, the population of bacteria on day 3 is 125.

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2 years ago

Find the zeros : x(x^2+13x+40)

Ksju [112]

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3 years ago

The measure of <ABC is 90 degrees and the measure of <DBC is 33 degrees

Pavel [41]

Answer:

Step-by-step explanation:

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3 years ago