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2 years ago

9

A culture started with 1,000 bacteria. After 4 hours, it grew to 1,100 bacteria. Predict how many bacteria will be present after

12 hours. Round your answer to the nearest whole number.

1 answer:

max2010maxim [7]2 years ago

6 0

Answer:

1,300

Step-by-step explanation:

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What is the value of variable for -4(y - 2) = 12<br> Explain please

Scrat [10]

Answer:

-4(y - 2) = 12

Standard form:

−4y − 4 = 0

Factorization:

−4(y + 1) = 0

Solutions:

y = −4

4

= −1

Step-by-step explanation:

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3 years ago

Need help for these two questions, any help is appreciated

kherson [118]

Answer:

I believe the answer is C

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3 years ago

State the number of complex roots, the number of positive real roots and the number of negative real roots of x^4 - x^3 - 6x +3

maria [59]

Answer:

Which points are collinear?

G, A, and T

G, E, and T

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A middle school basketball team won 36% of the games it played last season. the team won exactly 9 games last season. what is th

aliya0001 [1]

9 games equals 36 percent of x number of total games.

9=(36/100)x

Multiply both sides by (100/36) to isolate x.

9*(100/36)=x

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6 0

3 years ago

A countrys population in 1990 was 145 million. In 1998 it was 151 million. Estimate the population in 2015 using the exponential

alexandr402 [8]

Answer:

The population in 2015 will be 165 million.

Step-by-step explanation:

The exponential growth formula is given by:

$f(t) = a(1 + r)^{\Delta t}$

Where:

a: is the initial population

r: is the rate of increase

Δt: is the time

With the initial information we can find the rate:

$151 = 145(1 + r)^{1998-1990}$

Using logarithm:

$ln(151) = ln(145) + 8[ln(1 + r)]$

$ln(1 + r) = \frac{ln(151) - ln(145)}{8}$

$ln(1 + r) = 5.0683 \cdot 10^{-3}$

Using exponential:

$e^{ln(1 + r)} = e^{5.0683 \cdot 10^{-3}}$

$r = 5.081 \cdot 10^{-3}$

Now, we can find the estimated population in 2015:

$f(t) = 151(1 + 5.081 \cdot 10^{-3})^{2015-1998}$

$f(t) = 165$

Therefore, the population in 2015 will be 165 million.

I hope it helps you!

5 0

3 years ago