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3 years ago

141/56 as a mixed number

Mathematics

2 answers:

Shtirlitz [24]3 years ago

8 0

Just do long division and that should give your answer ok

elixir [45]3 years ago

6 0

I believe its 2 and 1/2

I'm so sorry if its not but I would guess it is :)

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if i have a 85% in a class and i fail a 40% test will i fail??? like will i fail that test??????????????????????????

elena-14-01-66 [18.8K]

If that test is worth 40% of your grade, it still depends. If your other grades (other tests, homework, quizzes, etc.) are great, then no worries.<span />

4 0

3 years ago

A sample of bacteria is decaying according to a half-life model. If the sample begins with 200 bacteria and after 5 minutes ther

77julia77 [94]

<h2>Hello!</h2>

The answer is:

There will remain a total of 134 bacteria after 7 minutes.

Exponential decay calculations are commonly used to find the decrease of amounts of populations, bacterias, and other situations when using proportional relationships. In order to find the problem, we must remember the equation used to calculate the exponential decay.

$Decay=S(1-r)^{t}$

Where,

S, is the starting value/amount

r, is the rate (% to real number)

t, is the time elapsed.

We are given that the numbers of bacteria decrease by 50 after 5 minutes, starting with 200, and after 5 minutes the number of bacteria is 150

Calculating the rate of decrease, we have:

$Rate=\frac{Decrease}{Starting}=\frac{200-150}{200}=\frac{50}{200}=0.25$

Therefore, the rate of decrease is 0.25 or 25% (after multiplying the number by 100)

Then, substituting the given information and the rate of decrease into the decay equation, we have:

$Decay=200(1-0.25)^{\frac{t}{5}}$

Now, to calculate how many bacteria will remain after 7 minutes, we need to substitute it into the decay equation:

$Bacteria(After7Minutes)=200(1-0.25)^{\frac{7}{5}}=133.69$

So, rounding to the nearest whole number, there will remain a total of 134 bacteria after 7 minutes.

Have a nice day!

3 0

2 years ago

Divide: 5 divided by 5/6

Alenkasestr [34]

I know the answer!!! The answer is 6

3 0

3 years ago

Create a sequence with five terms based on the given information. a. A arithmetic sequence with a third term of 8 and a constant

kolezko [41]

Part a .

A arithmetic sequence with a third term of 8 and a common difference of 5 .

To find the first five therms, since the common difference is 5, so we add 5 to get the fourth term and add 5 to fourth term to get the fifth term .

And for first two terms, we will subtract 5 from 8 to get the second term and subtract 5 from the second term to get the first term. And we will get

$8-5-5,8-5,8, 8+5+5 = -2 ,3,8,13,18$

Part b:A geometric sequence with a fifth term of 1/3 and constant ratio of 1/3.

TO find the first five terms, since the constant ratio of 1/3, so we multiply 1/3 to third term to get fourth term, and multiply fourth term by 1/3 to get fifth term .

And to get the first two terms, we will divide third term by 1/3, to get the second term and divide the second term by 1/3 to get the first term, that is

$3,1,\frac{1}{3}, \frac{1}{9},\frac{1}{27}$