Janiya found that her playlist will play for 3.8 * 10 ^ 2 seconds, 6. overline 3 * 10 ^ 5 , minutes x1 overline 5 * 10 ^ 4 * bours .or: Or 4.39814 * 10 ^ 2 * days Which answer uses the most appropriate units? (1 point)
The most appropriate units for this scenario would be days, as it provides the largest unit of time. Therefore, the answer that uses the most appropriate units is 4.39814 * 10^2 days.
To find the total number of acres in the park and the forest combined, we need to add the areas of the park and the forest together.
Area of the park = 1.42 * 10^6 acres
Area of the forest = 1.2 * 10^6 acres
Total area = Area of the park + Area of the forest
Total area = (1.42 * 10^6 acres) + (1.2 * 10^6 acres)
Adding the values, we get:
Total area = 2.62 * 10^6 acres
Therefore, the total number of acres in the park and the forest combined is 2.62 * 10^6 acres.
To subtract the given numbers in scientific notation, we need to first ensure that both numbers have the same exponent.
4.8 * 10^-3 = 0.0048
9.4 * 10^-6 = 0.0000094
Now we can subtract these numbers normally:
0.0048 - 0.0000094 = 0.0047906
To express this answer in scientific notation, we need to move the decimal point to the appropriate place to have only one non-zero digit before the decimal. In this case, we need to move the decimal point four places to the left:
0.0047906 = 4.7906 * 10^-3
Rounded to two decimal places, the answer is 4.79 * 10^-3.
To find the difference in mass between a grain of rice and a strand of hair, we need to subtract the mass of the hair from the mass of the rice.
Mass of hair = 2.17 * 10^-5 ounces
Mass of rice = 0.002 ounces
Difference in mass = Mass of rice - Mass of hair
Difference in mass = 0.002 ounces - 2.17 * 10^-5 ounces
To subtract these values, we need to convert the mass of the rice to scientific notation:
0.002 ounces = 2 * 10^-3 ounces
Substituting the values:
Difference in mass = (2 * 10^-3 ounces) - (2.17 * 10^-5 ounces)
To simplify the subtraction, we need to ensure that both numbers have the same exponent. In this case, we need to move the decimal point two places to the right in the second number:
Difference in mass = (2 * 10^-3 ounces) - (0.0217 * 10^-3 ounces)
Simplifying further, we get:
Difference in mass = (2 - 0.0217) * 10^-3 ounces
Difference in mass = 1.9783 * 10^-3 ounces
Therefore, a grain of rice is 1.9783 * 10^-3 ounces heavier than a strand of hair.
To find the number of miles light travels in a year, we need to multiply the speed of light by the number of seconds in a year.
Speed of light = 1.9 * 10^5 mi/sec
Number of seconds in a year = 3.2 * 10^7 seconds
Miles light travels in a year = Speed of light * Number of seconds in a year
Miles light travels in a year = (1.9 * 10^5 mi/sec) * (3.2 * 10^7 seconds)
When multiplying numbers in scientific notation, we can multiply the coefficients and add the exponents:
Miles light travels in a year = (1.9 * 3.2) * 10^(5 + 7) mi
Miles light travels in a year = 6.08 * 10^12 mi
Therefore, light travels approximately 6.08 * 10^12 miles in a year.
The number 1.78E12, as displayed on Chance's calculator, represents a number written in scientific notation.
The "E" in 1.78E12 represents "times ten raised to the power of."
In this case, 1.78E12 means 1.78 multiplied by 10 raised to the power of 12.
This can also be written as 1.78 x 10^12.
So, the number displayed on Chance's calculator is 1.78 multiplied by 10 raised to the power of 12, or 1.78 trillion (1,780,000,000,000).