Question

1. The pizza bot travels an average of 4 miles per hour. If he gets sent on a delivery to a house 1.5 miles away. How long will it take for the bot to make the delivery and return to the restraint.

Problem 2 A-B write in scientific action notation


Write in scientific notation A. 401,570,000 miles
B. 403,440,000 miles
C. 782,690,000 miles
D. 1,669,490,000 miles
E. 1,202,100,000 miles Please help

Answer 1

1) 45 minutes
2a)4.0157x10^8
2b)4.0344x10^8
2c)7.8269x10^8
2d)1.66949x10^9
2e)1.2021x10^9

Answer 2

1. Since the house is 1.5 miles away from the pizza place, that means the bot needs to travel in a 3 mile round trip to return to the restaurant.

3 miles x (1 hr/4 miles)=3/4 hours=45 minutes

2. Scientific notations is as simple as moving the decimal place to make the number more manageable. Moving the decimal to the left makes the number smaller, so you add x10 to an exponent to account for what the number should be. If you move the decimal three places to the left, you would add "x 10^3" for example.
a. 4.0157 x 10^8
b. 4.0344 x 10^8
c. 7.8269 x 10^8
d. 1.66949 x 10^9
e. 1.2021 x 10^9