Use the division example below to answer questions 9-11.
a pic of 1.925x10^5 divided by 2.50
(9.) Divide the coefficients. (1 point)
1 point
250 divded by 1925
1925 divided by 250 =7.7
2.50 divided by 1.925
1.925 divded by 2.50=0.77
The correct calculation would be 192,500 divided by 2.50 which equals 77,000.
the awncwers are
250 divded by 1925
1925 divided by 250 =7.7
2.50 divided by 1.925
1.925 divded by 2.50=0.77
Apologies for the confusion. The correct calculations are as follows:
250 divided by the coefficient 1925 equals 0.13.
The coefficient 1925 divided by the coefficient 250 equals 7.7.
2.50 divided by the coefficient 1.925 equals 1.30.
The coefficient 1.925 divided by 2.50 equals 0.77.
10.) Is the answer in Scientific Notaton? (1 point)
1 point
No, 0.77 is NOT and we need to move the decimal once to the right to be 7.7
No, 0.77 is NOT and we need to move the decimal to the left to become 0.077
Yes, it is ready to go
No, 0.77 is not in scientific notation. The number 7.7 is also not in scientific notation. In scientific notation, the coefficient should be between 1 and 10, and the exponent should indicate the power of 10.
(11.) In the example above, why did I subtract 1 from the exponent making it 4? ( 1 Point)
1 point
When moving the decimal to the right , you must subtract an exponent.
When you move a decimal to the right, you must add an exponent.
It just seemed like the thing to do!
When dividing by a power of 10 in scientific notation, the decimal point is moved to the left. Each move of the decimal point to the left requires subtracting 1 from the exponent. In this case, the decimal point was moved one place to the left, so the exponent was subtracted by 1, making it 4. Therefore, the correct answer is "When moving the decimal to the right, you must subtract an exponent."
(12.) After multiplying the coefficients in the example above and getting the product of 30.75, why did I move the decimal to the left ? ( 1 Point)
1 point
30.75 is not in correct Scientific Notation so the decimal was moved to make 3.075
30.75 is not in correct Scientific Notation. When decimal moved to make the number larger.
The number was too small so the decimal was moved to the left.
The first option is the correct answer. After multiplying the coefficients and obtaining the product of 30.75, the number is not in the correct scientific notation. In scientific notation, the coefficient should be between 1 and 10, so the decimal was moved to the left to make it 3.075, which is in the correct scientific notation.
(13.) In the example above, why was an exponent added? (1 point)
1 point
When moving a decimal to the left, we subtract an exponent.
To make the base smaller
When moving a decimal to the left, we add an exponent.
For fun!