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Mandarinka [93]
2 years ago
11

In 2012, California had a population of about 38 million people, and North Dakota had a population of about 699,000 people. What

is the difference in population between California and North Dakota
Mathematics
1 answer:
Gemiola [76]2 years ago
5 0

Answer:

37,301,000

Step-by-step explanation:

The difference in population can be determined by subtracting the population of North Dakota from California

38,000,000 - 699,000 = 37,301,000

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The school jazz band consists of 2 male percussionists, 2 female percussionists, 3 male woodwinds, 2 female woodwinds, 4 male br
dusya [7]

Answer:

\frac{1}{8} chance or 12.5% chance

Step-by-step explanation:

2 male <em>percussionists</em>

2 female <em>percussionists</em>

3 male <em>woodwinds</em>

<u>2 </u><u>female</u><u> </u><u><em>woodwinds</em></u>

4 male <em>brass players</em>

3 female <em>brass players</em>

We're looking for a female <em>woodwind. </em>Now there is only 2 of them so we get the female woodwinds out of all the jazz band members or \frac{2}{16} or \frac{1}{8} or 12.5% chance.

6 0
2 years ago
A researcher is testing how bacterial cells react to different environments. She placed a petri dish that initially had 32,000 b
Nataly [62]

<u>Solution- </u>

A researcher placed a petri dish with 32,000 bacterial cells. One hour after being placed in the vacuum chamber, the number of cells in the petri dish had halved. Another hour later, the number of cells had again halved.

This can be represented as exponential decreasing function,

y=a(1 - r)^x

Where,

  • a = starting amount  = 32000
  • r = rate  = 50% = 0.5 as the sample becomes halved in each hour
  • x = hours

Putting the values,

\Rightarrow y=32000(1 - 0.5)^x

\Rightarrow y=32000(0.5)^x

y-intercept means, where x=0, so

\Rightarrow y=32000(0.5)^0\\\\\Rightarrow y=32000\times 1=32000

The coordinate of this poin will be (0, 32000)

This means when x=0 or at the starting of the research, the number of bacteria cells was 32000.

After 3 hours, number of bacteria cells will be,

\Rightarrow y=32000(0.5)^3

\Rightarrow y=32000\times 0.125

\Rightarrow y=4000

The  coordinate of this point will be (3, 4000)

7 0
2 years ago
A trapezoid is 14 centimeters high and has bases that measure 13.5 centimeters and 27.5 centimeters. What is the area of the tra
Alexxandr [17]
Hello!

We can find the area of the trapezoid using the formula for area of a trapezoid:

FORMULA: 

A = [(b + b) * h / 2]

SUBSTITUTE: 

A = [(13.5 + 27.5) * 14 / 2]

SOLVE: 

A = 41 * 14 / 2

A = 574 / 2 

A = 287 cm²

So, the area of the trapezoid is 287 cm².


7 0
2 years ago
You have found a home that you are interested in purchasing. Instead of a conventional loan, you agree to pay the premium for th
Elena-2011 [213]
Hi there
Down payment is 5% of the amount listed
100-95=5%
So the amount of down payment is
95,278×0.05=4,763.9

Hope it helps
5 0
2 years ago
a teacher needs 70 lengths of string cut to 40 cm each. If balls of string are 10 m long how many balls will be needed
LenKa [72]
A meter is 100 cm. A ball of string has 10m of string, and you multiply 10m by 100cm, you get 1,000cm. Then you multiply 40cm by 2, and you get 80cm, or two lengths of string. Then you multiply 35, which is half of 70, by 80, and that is 2,800 cm.
2,800
÷40cm=70
And 100cm=1m.
The teacher will therefore need 28 balls of string.
7 0
2 years ago
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