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12345 [234]
2 years ago
6

In 1980, the United States' national debt exceeded $9 billion dollars. Express the exact dollar amount in scientific notation. U

se complete sentences to explain, step by step, how to convert a number from standard form to scientific notation. You may use your answer to question #1 to help you explain the process. Calculate, in scientific notation, how many times greater the recorded debt in 2010 is compared to the recorded debt in 1960. Express your answer in proper scientific notation
Mathematics
2 answers:
DanielleElmas [232]2 years ago
8 0
Well, 9 billion = 9,000,000,000 so in scientific form it would be 9 x 10^9 To get the exponent, just count the number of zeros, which for 9 billion we have 9
kramer2 years ago
3 0

$9 billion has 9 zeros so would be written as 9,000,000,000

 to write in scientific notation move the decimal point 9 places to the left so the number becomes 9

now that would be multiplied by 10 to an exponent. The exponent is equal to the number of spaced you moved the decimal point. In this case you moved it 9 places

 so scientific notation is 9x10^9


 1960 debt was 2.86x10^9, 2010 debt was 1.3562*10^13 -= 2.1x10^4 times more


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melamori03 [73]

Answer:

Correct option (A).

Step-by-step explanation:

The probability of an individual catching a flu when he or she has taken vitamin C is, P (F|C) = 0.0342.

The probability of an individual catching a flu when he or she has not taken vitamin C is, P (F|C') = 0.2653.

Th ratio of individuals who caught the flu when they did not take vitamin C to those who took vitamin C is:

=\frac{P(F|C')}{P(F|C)}\\ =\frac{0.2653}{0.0342} \\=7.7573

This implies that:

P(F|C')=7.7573\times P(F|C)

Thus, the the individuals not taking vitamin C are 7.7573. Times more likely to catch the flu than individuals taking vitamin C.

The statement is True.

4 0
1 year ago
Last weekend, Lena worked 7.5 hours on Friday, 9.75 hours on Saturday, and 6.25 hours on Sunday.
Gemiola [76]

Answer:202.1

Step-by-step explanation:

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Hope this helps :)

3 0
1 year ago
a rectangle pyramid fits exactly on top of a rectangular prism. the prism has a length of 18 cm, a width of 6 cm, and a height o
irina1246 [14]
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When you plug in your numbers you should get V= 18x6x9 which ends up equaling 972.

Now that you have that you need to find the volume of the pyramid using the formula V= L x W x H /3 and when you plug that in it looks like
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Upon simplifying that you get 540.

Now you have the volume of your rectangular prism and your rectangular pyramid add them together and you should get 1512



I recommend drawing it out... it helps a lot:)
4 0
1 year ago
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FinnZ [79.3K]
Values which are proportional are represented by the Greek letter ‘Alpha’
So if A is proportional to B
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A caterer makes 3 extra sandwhiches for every 20 sandwhiches a customer orders. What is the ratio of ordered sandwiches to extra
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You can solve this by making a proportion.

\frac{3}{20} =  \frac{x}{184}

you cross multiply and divide to solve this. your answer is 8.

4 0
1 year ago
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