3 years ago

Help me with this math problem

Mathematics

1 answer:

Rama09 [41]3 years ago

8 0

Answer:

Step-by-step explanation:

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The population of Oak Forest is increasing at a rate of 4% per year. If the population is 39,410 today, what will it be in three

Nataly [62]

The population of Oak Forest is increasing at a rate of 4% per year.

Increase rate, r = 4%

Current population, P = 39,410

time, t = 3 years

Population after 3 years will be:
$P{(1 + \frac{r}{100} )}^{t} \\ \\ = 39410 \times { ( 1 + \frac{4}{100} )}^{3} \\ \\ = 39410 \times {1.04}^{3} \\ \\ = 44330.89 \\ \\ \approx \boxed{44331}$

Population after 3 years will be 44331

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3 years ago

If the denominator of 5/7 is increased by a number and the numerator is doubled, the result is 1. Find the number.

iren2701 [21]

Answer:

Step-by-step explanation:

let n be the number, then

$\frac{10}{7+n}$ = 1 ← multiply both sides by 7 + n