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4 years ago

12

While testing a new vaccine, a lab technician noticed that the number of bacteria reduced by half every minute. How long does it

take for 3,000 bacteria to reduce to 375?
It takes
minutes for the number of bacteria to reduce from 3,000 to 375.
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1 answer:

USPshnik [31]4 years ago

3 0

50 mins would be the answer I think

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A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We are interested in determinin

stepan [7]

Answer:80 percent

Step-by-step explanation:

From the question, the total number of sample is 100 that is hundred(100) people . Eighty (80) people from the sample are in favour of candidate A.

Therefore, the mean statistic is one(1), that is, 0.8+0.05+1.15+2.00= 1.

So, total number from the hundred people supporting Candidate A divided by the total number of sample of the population multiply by a 100 percent;

= 80/100 × 100= 80%.

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3 years ago

Which number can each term of the equation be multiplied by to eliminate the fractions before solving?

yaroslaw [1]

Answer: 4

Step-by-step explanation: 4 was the biggest denominator in that equation. so if we multiply by 4 on all the terms, all the denominators will go away. we will not have any more fractions!

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3 years ago

The graph of an exponential function passes through (2,−32) and (3,−64). Find the exponential function that describes the graph.

Greeley [361]

Answer: $y=(-8)2^x$

Step-by-step explanation:

The exponential function will have this form:

$y=ab^x$

We know that the function passes through the points $(2,-32)$ and $(3,-64)$ . Then, we can substitute the coordinates of the point $(2,-32)$ into $y=ab^x$ and solve for "a":

$-32=ab^2\\\\a=\frac{-32}{b^2}$

Then, we know that:

$y=(\frac{-32}{b^2})b^x$

Now, we neeed to substitute the coordinates of the second point $(3,-64)$ into $y=(\frac{-32}{b^2})b^x$ and solve for "b":

$-64=(\frac{-32}{b^2})b^3\\\\-64=-32b\\\\\frac{-64}{-32}=b\\\\b=2$

Substituting the value of "b" into $a=\frac{-32}{b^2}$ we can find "a":

$a\frac{-32}{2^2}\\\\a=-8$

Therefore, we get that the exponential function that describes the graph, is:

$y=(-8)2^x$

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3 years ago

In June, Jim ran a mile in 7 minutes and 45 seconds. After training the entire summer he ran a mile in 5 minutes and 51 seconds

gregori [183]

Step-by-step explanation:

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3 years ago

Yuki888 [10]

The last option, the y-intercept.

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4 years ago