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In-s [12.5K]
3 years ago
9

Jean add 35 + 9. How can she solve using only equations to model her thinking?

Mathematics
1 answer:
Alexus [3.1K]3 years ago
8 0

Answer:

( 35+9=44)

Step-by-step explanation:

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3 years ago
4x + 11y = 7<br> 4x + 3y = -1
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Use the chart to estimate the population density of Romania in 1997. Round to the nearest person.
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The population density of Romania in 1997 given its area and the population is 95 people per square km.

<h3>What is the population density?</h3>

Population density is the number of people that live in a square kilometer of an area. It is determined by dividing total population by total area.

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2 years ago
Determine if the given sides are a triangle or not <br><br> A. 21 cm, 7 cm, 6 cm
fgiga [73]

Answer:

This is not a triangle

Step-by-step explanation:

If you use the triangle inequality theorem you can reach your answer.

The theorem states that if you add the length of any 2 sides together, you will have a length greater than the length of the other side. Using this method we can easily see that 7+6=13 which is less than 21. Meaning this is not a triangle

4 0
3 years ago
A scientist runs an experiment involving a culture of bacteria. She notices that the mass of the bacteria in the culture increas
Genrish500 [490]

The growth factor for the mass of bacteria is 2.8 in 1 week.

Step-by-step explanation:

Step 1:

It is given that the bacteria in the culture increase by 260% per week. Now we assign values to get a better understanding. If there were 1,000 bacteria in the culture at the start of the week there would be 1,000 + 260% at the week's end = 1,000 + 2,600 = 3,600 at the week's end.

Step 2:

To calculate the growth factor, we calculate the difference between the present value and the past value and divide it by the past value.

Here the past value is 1,000 and the present value is 2,600.

Growth factor = \frac{difference in values}{past value} = \frac{3,600-1,000}{1000} = \frac{2,600}{1,000} = 2.6.

So the growth factor is 2.6 per week.

7 0
3 years ago
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