5 minutes would be 290 and 8 minutes would be 464.
1a:
580 - (580 × .1) - 20
580 - (58) - 20
522 - 20
502
1b:
990 - (990 × .25) - 20
990 - (247.5) - 20
742.5 - 20
722.5
I'm not sure how to solve #2.
27 times 27
7 times 2,401
1,000,000,000 divided by 10,000,000
390,625 divided by 5
hope this helps!!
Answer: the second fifth and sixth one
Step-by-step explanation:
42/558 is what you write to show the expression 42 divided by 558