1. Write 0.000000065 in scientific notation.

Question

2. The speed of light is about 671,000,000 miles per hour. How will you write this number in scientific notation?(1 point)

3. Suppose an average person blinks 15 times per hour. How many times does an average person blink in a year? Write the answer in scientific notation (Hint: 1 year = 365 days, 1 day = 24 hours).(1 point)

4. What is the number 5.9×10^5 written in decimal notation?(1 point)

5. What is the number 7.3×10^−8 written in decimal notation?(1 point)%0D%0AResponses

Answer 1

1. The number 0.000000065 in scientific notation is \( 6.5 \times 10^{-8} \).

2. The speed of light, 671,000,000 miles per hour, can be written in scientific notation as \( 6.71 \times 10^8 \).

3. To find out how many times an average person blinks in a year:

   • Blinks per hour = 15
   • Hours in a day = 24
   • Days in a year = 365

   So, the total blinks in a year = \( 15 , \text{blinks/hour} \times 24 , \text{hours/day} \times 365 , \text{days/year} \).

   Calculating it: \[ 15 \times 24 \times 365 = 131400 \]

   In scientific notation, \( 131400 \) is \( 1.314 \times 10^5 \).

4. The number \( 5.9 \times 10^5 \) written in decimal notation is \( 590000 \).

5. The number \( 7.3 \times 10^{-8} \) written in decimal notation is \( 0.000000073 \).

Answer 2

for 4 its 590,000 anyway TY BYE!

Answer 3

You're correct! \( 5.9 \times 10^5 \) is indeed \( 590,000 \). Thank you for pointing that out! If you have any more questions in the future, feel free to ask. Have a great day! Bye!