Our galaxy is estimated to be

5.6 * 1019 mi across. How many years would it take a spaceship traveling at 43,000 mph to cross the galaxy? (Round the decimal value to one decimal place.)

Could you show steps on how you got the answer?

Would take 1.48 x 10¹¹ years to cross the galaxy

Step-by-step explanation:

galaxy is estimated to be 5.6 * 10¹⁹ mi across = Distance

spaceship traveling at 43,000 mph = Speed

From Speed = Distance / Time

∴ Time = Distance / Speed

= 5.6 * 10¹⁹ / 43,000

= 5.6 * 10¹⁹ / 4.3 x 10⁴

= 5.6/4.3 x 10¹⁹ ⁻ ⁴

= 1.3 x 10¹⁵ hours

Convert time in hours to years

Asuming 24 hours make a day and 365days make a year

= 1.48 x 10¹¹ years to cross the galaxy