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3 years ago

There are 5 bacteria in a petri dish at the start of an experiment. This type of bacteria doubles every 20 minutes.

Mathematics

1 answer:

Elodia [21]3 years ago

7 0

Answer:

20480

Step-by-step explanation:

4hr = 12 doubles

5 * 2 ^ 12 = 20480

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Write the equation of the line that passes through the points (-4,-4) and (6,3).

Phantasy [73]

I hope this helps I took both of the points and used the slope formula to get my slope which is 7/10 then I took any point from those two then I plugged it in to get the point slope form

Answer: y-3=7/10(x-6)

6 0

3 years ago

Mary can paint a house by herself in 12 hours. john can paint a house by himself in 16 hours. how long would it take them to pai

QveST [7]

1/12+1/16=1/n
4/48+3/48=1/n
7/48=1/n
48=7n
n=48/7 hours to paint the house if they worked together
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5 0

3 years ago

6000 is deposited into a fund at the annual rate of 9.5%. Find the time required for the investment to double if the interest is

Anna [14]

Answer: 7.58 years

Step-by-step explanation:

When it comes to finding out how long it will take for an investment to double, one can use the Rule of 72.

The Rule of 72 estimates the amount of time it will take to double an investment when you divide 72 by the interest rate:

= 72 / r

= 72 / 9.5

= 7.58 years

3 0

3 years ago

I think of a number. If I divide the sum of 6 and the number by 3,the result is 4 more than one quarter of the number. Find the

Alex17521 [72]

Answer:

Step-by-step explanation:

Let the number be x.

Sum of the number and 6: $6+x$

Divide it by 3: $\frac{6+x}{3}$

Result is 4 more than one quarter of the number:

$\frac{6+x}{3} =4+\frac{1}{4} x$

Multiply both sides by 12:

$\frac{6+x}{3}\cdot \:12=4\cdot \:12+\frac{1}{4}x\cdot \:12$

Simplify:

$4\left(x+6\right)=48+3x$

Expand:

$4x+24=48+3x$

Subtract 24 from both sides:

$4x+24-24=48+3x-24$

$4x=3x+24$

Subtract 3x from both sides:

$4x-3x=3x+24-3x$

$x=24$

The number is 24.

7 0

3 years ago

NOTE: Angles not necessarily drawn to scale.

Alina [70]

Answer:

x = 56°

Step-by-step explanation:

DAF is a straight line so it has a measurement of 180°

180° - 64° - 60° = x

x = 56°

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

7 0

2 years ago