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Alexxandr [17]
3 years ago
9

Find the value of two numbers if their sum is 23 and their difference is 3.

Mathematics
1 answer:
Yakvenalex [24]3 years ago
3 0

x+y=23

x-y=5

First, add the equations.

2x=28

x=14

Then...

14+y=23

y=9

Therefore the answer is...

x=14  y=9

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A population of 3000 people doubles in size every 10 years. Determine the population after 50 years.
RUDIKE [14]

Answer:

In 50 years Population is 96000 people.

Step-by-step explanation:

Let population be x

In the first 10 years

Population becomes 2x

In 20 years it becomes 4x

In 10n years it becomes 2^n x

Therefore

for n= 5

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= 32(3000)

= 96000

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Hope it helps...

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This is the procedure, with the answer given.
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