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1 year ago

Which direct counting method is reported in terms of colony forming units (cfus)?

1 answer:

4 0

Plate counting method is reported in terms of colony forming units (cfus). Colony-forming unit (CFU, cfu, or CFU) is a unit used in microbiology to measure the number of viable microorganisms (bacteria, fungi, viruses, etc.) in a sample that can reproduce through binary fission under controlled conditions.

In contrast to microscopic analysis, which counts all cells, living or dead, counting with colony-forming units requires cultivating the bacteria. When counting colonies, it is unclear if the colony originated from one cell or a collection of cells because visual appearance of a colony in a cell culture to requires the significant growth.

To learn more about counting, click here.

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How long will it take for a $4000 investment to grow to $6000 at an annual rate of 15%, compounded monthly? Assume that no withd

Inessa05 [86]

Answer:

It will take 2.72 years and 32.64 months.

Explanation:

Future value is the sum of principal amount and compounded interest amount invested on a specific rate for a specific period of time.

Use following formula to calculate the time period.

FV = PV x ( 1+ r )^n

FV = Future value = $6,000

PV = Present Value = $4,000

r = rate of interest = 15% yearly = 15% / 12 = 1.25%

n = time period = ?

$6,000 = $4,000 x ( 1 + 1.25% )^n

$6,000 = $4,000 x ( 1.0125 )^n

$6,000 / $4,000 = ( 1.0125 )^n

1.5 = ( 1.0125 )^n

Log 1.5 = n log 1.0125

n = Log 1.5 / log 1.0125

n = 32.64 months

n = 2.72 years

6 0

3 years ago

Manta Ray Company manufactures diving masks with a variable cost of $31. The masks sell for $40. Budgeted fixed manufacturing ov

riadik2000 [5.3K]

Answer:

When there is no change in the beginning and ending units of inventory i.e the units sold are equal to the units produced,the income under variable and absorption costing remains the same which is the condition in the given question.

Explanation:

If we have 80,000 units produced and sold then the income under both methods will be the same.

Manta Ray Company

Income Statement Variable Costing

Sales $40*80,000= $ 3200,000

Variable Costs $ 31*80,000= $ 2480,000

Contribution Margin $ 720,000

Less Fixed Costs $ $712,800

Gross Profit $ 7200

Manta Ray Company

Income Statement Absorption Costing

Sales $40*80,000= $ 3200,000

Variable Costs $ 31*80,000= $ 2480,000

Fixed Costs $ $712,800

Gross Profit $ 7200

If there is an increase in the inventory units ( ie. production is less than the Sales) the fixed manufacturing overhead cost is released from inventory and deducted from variable income.

Similarly when the inventory units decrease ( ie. production is more than the Sales) the fixed manufacturing overhead cost is deferred from inventory and added to variable income.

8 0

3 years ago

The total demand for money is the sum of the transactions demand plus the ____________ demand for money.

Mkey [24]

Answer:

precautionary and speculative

Explanation:

Aggregating the transactional, precautionary and speculative demand for money, we get the total demand for money. This is sometimes known as the liquidity preference curve, and is inversely related to the rate of interest.

Total demand for money=Transactions demand+precautionary and speculative demand for the money

Therefore, the answer to the question is precautionary and speculative

5 0

3 years ago

What is the amount of the payments that Ned Winslow must make at the end of each of 8 years to accumulate a fund of $90,000 by t

nekit [7.7K]

Answer:

Amount to be paid annually by Ned Winslow = $8461.35

Explanation:

Fv = A ( 1 + r)∧n - 1

90,000 = A ( 1 + 0.08)∧8 - 1

0.08

90,000 = A ( 1.8509 - 1)

0.08

90,000 = 10.6366A

A = 90,000/10.6366

= $8,461.35

3 0

3 years ago

Read 2 more answers

You own a portfolio that has $2,650 invested in Stock A and $4,450 invested in Stock B. If the expected returns on these stocks

barxatty [35]

Answer:

9.88%

Explanation:

Calculation for the expected return on the portfolio

First step is to find Total portfolio vale using this formula

Total portfolio vale=(Stock A portfolio + Stock B portfolio)

Let plug in the formula

Total portfolio vale= (2,650+4,450)

Total portfolio vale= 7,100

Second step is to calculate for the Expected portfolio return of Stock A by dividing Stock A portfolio by the Total portfolio vale then multiply it by the expected returns percentage

Expected portfolio return Stock A = 2,650 / 7,100

Expected portfolio return Stock A = 0.3732 *0.08

Expected portfolio return Stock A =0.02986

The third step is to calculate for the Expected portfolio return of Stock B by dividing Stock B portfolio by the Total portfolio vale then multiply it by the expected returns percentage

Expected portfolio return Stock B=$4,450/$7,100

Expected portfolio return Stock B=0.6268 *0.11 Expected portfolio return Stock B= 0.06895

The last step is add up the expected return on the portfolio for both Stock A and Stock B

Using this formula

Expected return on the portfolio=(Stock A Expected return on the portfolio + Stock B Expected return on the portfolio)

Let plug in the formula

Expected return on the portfolio=0.02986+0.06895

Expected return on the portfolio= 0.0988 *100 Expected return on the portfolio= 9.88%

Therefore the expected return on the portfolio will be 9.88%

6 0

3 years ago