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2 years ago

When you multiply a number by 25 you get another number that is 250 more than 1000. find the number

Mathematics

1 answer:

Alex73 [517]2 years ago

8 0

Answer:

Step-by-step explanation:

1000+250=1250

After that Just do it in reverse:

1250/25=50

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A type of bacteria has a very high exponential growth rate of 80% every hour. If there are 10 bacteria, determine how many will

Lana71 [14]

<h3>There are 189 bacteria in 5 hours</h3><h3>There are 13382588 bacteria in 1 day</h3><h3>There are $10(1.8)^{168}$ bacteria in 1 week</h3>

<em><u>Solution:</u></em>

Given that,

A type of bacteria has a very high exponential growth rate of 80% every hour

There are 10 bacteria

<em><u>The increasing function is given as:</u></em>

$y = a(1+r)^t$

Where,

y is future value

a is initial value

r is growth rate

t is time period

From given,

a = 10

$r = 80 \5 = \frac{80}{100} = 0.8$

<em><u>Determine how many will be in 5 hours</u></em>

Substitute t = 5

$y = 10(1 + 0.8)^5\\\\y = 10(1.8)^5\\\\y = 10 \times 18.89568\\\\y \approx 188.96$

y = 189

Thus, there are 189 bacteria in 5 hours

<em><u>Determine how many will be in 1 day ?</u></em>

1 day = 24 hours

Substitute t = 24

$y = 10(1 + 0.8)^{24}\\\\y = 10(1.8)^{24}\\\\y = 10 \times 1338258.84\\\\y = 13382588.45\\\\y \approx 13382588$

Thus, there are 13382588 bacteria in 1 day

<em><u>Determine how many will be in 1 week</u></em>

1 week = 168

Substitute t = 168

$y = 10(1 + 0.8)^{168}\\\\y = 10(1.8)^{168}$

Thus there are $10(1.8)^{168}$ bacteria in 1 week

6 0

4 years ago

Determine the value of e.

Softa [21]

9514 1404 393

Answer:

A) 16

Step-by-step explanation:

The ratio of long-side to short-side is the same for all of these similar triangles, so we have ...

e/8 = 8/4

e = 8(8/4) = 8(2) = 16

The value of e is 16.

7 0

3 years ago

There is a jar of 25 black marbles and 50 red marbles what is the probability at least 2 are red

liraira [26]

2/3 chance you pull red on the first pull because there are 50 red to the 25 black marble

4 0

4 years ago

Read 2 more answers

Find the slope between (1,16) and (9,9). Substitute in the following numbers that are missing. Rise (? - 6) Run (9 - ?)

german

Answer:

-7,8

9-16=-7

9-1=8

4 0

4 years ago

Please answer the following question

11Alexandr11 [23.1K]

The answer is right.....

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3 years ago