C is false. 9 multiplied by 7 equals 63.
Answer:
5 hrs
Step-by-step explanation:
7 1/2 hours equates to 450 minutes total
2/3 of 450 = 300 total minutes
turning the minutes back into hours, 300 / 60 = <u>5</u>
905,154 rounded to the nearest ten thousand is 910,000. This is because the 5 in the thousands place is equal to 5, and when the number is 5 or more, you round up. That’s why when you round that number to the nearest ten thousand, it is 910,000.
Answer: 
Step-by-step explanation:
With negative powers, 
do the same for s too
Ok I’m so sorry I can’t answer this but if no one does then check out wolframalpha.com
That’s where I used to get all my answers from cuz it can solve almost any mathematical problem! <3
Hope that helps in a way!