An asteroid is heading toward Mars at the rate of 7.7 x 10^4 mi./hr. If the asteroid is 3.311 x 10^8 miles away from Mars, how many hours will it be before it hits Mars? Write the answer in scientific notation, expressed to the exact decimal place.

Answer 1

To find the time it will take for the asteroid to hit Mars, we need to divide the distance to Mars by the rate of the asteroid.

Distance to Mars: 3.311 x 10^8 miles
Rate of the asteroid: 7.7 x 10^4 mi./hr

Time = Distance / Rate

Time = (3.311 x 10^8 miles) / (7.7 x 10^4 mi./hr)

To divide two numbers written in scientific notation, we divide their coefficients (numbers before the multiplication sign) and subtract their exponents (numbers after the multiplication sign).

Time = (3.311 / 7.7) x 10^(8 - 4) miles/hr

Time = 0.42935 x 10^4 miles/hr

Since the time is in hours, we can simplify the units as follows:

Time = 4.2935 x 10^3 hr

Therefore, it will be approximately 4.2935 x 10^3 hours before the asteroid hits Mars.

Answer 2

Wrong.

Answer 3

the answer is 4.3x 10^3