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Ivahew [28]
3 years ago
10

A particular strain of bacteria doubles in population every 10 minutes. Assuming you start with a single bacterium in a petri di

sh, how many bacteria will there be in 2.5 hours
Mathematics
2 answers:
Amanda [17]3 years ago
8 0
22,500 bacteria will be in 2.5 hours
SVEN [57.7K]3 years ago
4 0

Let the initial number of bacteria be x_{0}

Number of bacteria doubles in population every 10 minutes

After 10 minutes number of bacteria = 2x_{0}

number of bacteria present after t minutes,

x = x_{0}\times2^{t}

When t = 2.5 hrs = 2.5 (60) = 150 minutes

So every 10 minutes t = 150/10 = 15

Now substitute t = 15 minutes and x_{0} = 1, we get

x = 1\times2^{15}

x = 32,768 bacteria



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To which subset of real numbers does the number 1/5 belong?
nasty-shy [4]

Answer: Option 'B' and 'C' are correct.

Step-by-step explanation:

Since we know that irrational numbers are those real number which cannot be written in \frac{p}{q} form.

Rational numbers are those real numbers which can be written in \frac{p}{q} form.

Inverse property of multiplication is that property in which we write a number in reciprocal form .

Whole numbers starts from 0 and Natural numbers start from 1 and Integers contain both positive and negative numbers.

Hence, \frac{1}{5} belongs to rational numbers sets and inverse property of multiplication sets.

Therefore, Option 'B' and 'C' are correct.


5 0
3 years ago
Read 2 more answers
8. Patrice and Don buy a home for $92,000. The property tax rate is$39.50 per $1,000 of assessed value. The assessment rate is 4
Kaylis [27]

We start by calculating the assessed value, that is 41% of the price.

The price is $92,000.

Then, the assessed value is:

AV=a\cdot P=\frac{41}{100}\cdot92000=0.41\cdot92000=37720

The property tax rate is $39.50 per $1000 of assessed value, so we can express this rate as:

\text{tax rate}=\frac{39.50}{1000}=0.0395

We then can multiply this rate by the assessed value to calculate the total property tax:

\text{tax}=0.0395\cdot37720=1489.94

NOTE: we could have also multiplied 39.50 by 37.72. The value 37.72 is the thousands of dollars of assessed value. We would have obtained the same result: 39.50*37.72=1489.94.

Answer: the property tax is $1,489.94.

3 0
1 year ago
Floyd is an aspiring music artist. He has a record contract that pays him a base rate of $200 a month and an additional $12 for
Alina [70]
200+12m= 644
subtract 200 from both sides
12m= 444
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he sold 37 albums
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3 years ago
Whoever answers first I'll give a brainly what is<br> 2+2
Naya [18.7K]

Answer:

4

Step-by-step explanation:

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3 years ago
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5. A Major League Baseball stadium sells three types of tickets. Reserved tickets are sold for $20 each, field-level tickets are
Ad libitum [116K]

Answer: A) When all three ticket prices generate the same revenue.

Step-by-step explanation:

Reserved tickets cost $20 each.

Field-level tickets cost $50 each.

Seat tickets cost $100 each.

Then if x represents the number of reserved tickets sold, the total revenue for the reserved tickets will be:

R(x) = x*$20

If w represents the number of field-level tickets sold, the total revenue for field-level tickets will be:

F(w) = w*$50

If y represents the number of seat tickets sold, then the total revenue for the seat tickets will be:

S(y) = y*$100

Those equations will intersect when:

R(x) = F(w) = S(y)

This will mean that they will intersect when all three tickets have the same revenue, then the correct option is:

A) When all three ticket prices generate the same revenue.

3 0
2 years ago
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