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Varvara68 [4.7K]
2 years ago
6

Is 12/19 rational or irrational?

Mathematics
1 answer:
kodGreya [7K]2 years ago
5 0

Answer:

irrational

Step-by-step explanation:

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A scientist writes the equation n(h)100e^0.25h to model the growth of a certain bacteria in a petri dish, where N represents the
Natasha2012 [34]

Answer: Second option is correct.

Step-by-step explanation:

Since we have given that

n(h)=100e^{0.25h}

where, N represents the number of bacteria after 'h' hours.

So, we have given that there are 450 bacteria present.

N = 450

According to question,

450=100e^{0.25h}\\\\\frac{450}{100}=e^{0.25h}\\\\4.5=e^{0.25h}\\\\\text{Taking natural log 'ln' on both sides}\\\\\ln (4.5)=0.25h\\\\1.50=0.25h\\\\h=\frac{1.50}{0.25}\\\\h\approx 6\ hours

Hence, Second option is correct.

8 0
2 years ago
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The graph of the function
Anettt [7]

Answer:

  D.The function is decreasing for all real values of x where x < 1.5

Step-by-step explanation:

The vertex is at x=1.5, so the function is decreasing on one side of that and increasing on the other. Any answer choice with some number other than 1.5 as the boundary of increasing/decreasing can be ignored.

Of course one descriptor (<em>increasing</em> or <em>decreasing</em>) is not applicable for any interval that includes the point where the slope changes sign.

The function is decreasing for all real values of x where x < 1.5.

4 0
3 years ago
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Can you please answer my question number9
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X=25... hope this helps
6 0
2 years ago
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4. A drawing of the top of a desk iS shown.
KATRIN_1 [288]

The area of the top of a desk which is shown and the dimensions of the top is 5 feet and 2 feet, is 10 squared feet.

<h3>What is the area of a rectangle?</h3>

Area of a rectangle is the product of the length of the rectangle and the width of the rectangle. It can be given as,

A=a\times b

Here, (a)is the length of rectangle and (b) is the width of the rectangle

A drawing of the top of a desk is shown.

  • 5 feet
  • 2 feet

The image of drawing ins not given in the problem. Here, the length of the desk is 5 feet and the width of the desk is 2 feet according to the data.

a=5\rm\; feet\\b=2\rm\; feet

Put the values in the above written formula as,

A=5\times 2A=10\rm\; ft^2

Thus, the area of the top of a desk which is shown and the dimensions of the top is 5 feet and 2 feet, is 10 squared feet.

Learn more about the area of rectangle here;

brainly.com/question/11202023

#SPJ1

8 0
2 years ago
A car is 108 inches long.
lozanna [386]

Answer:

D if car's length is 180 and not 108

Step-by-step explanation:

Truck is 75% longer than the car implies that the length of the truck is 175% (100+75 = 175) of the length of the car.

175/100 × 108

= 189 inches

None of the above

If we take the car's length to be 180 inches, then

175/100 × 180 = 315 inches

5 0
3 years ago
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