A quater of 72 is 18. So 18 + 72 =90. A tenth of 90 is 9 so... 90 - 9 = 81
Answer:
C. about 25 years.
Step-by-step explanation:
We have been given that two Jackie takes off on a round-trip to Vega, 25 light-years away. She travels at an average speed close to the speed of light, say, 0.9999c.
To find time it will take Jakie to reach Vega, we will divide the distance of Vega by Gwen's speed.


Therefore, it will take approximately 25 years for Jakie to reach Vega and option C is the correct choice.
Answer:
C)
Step-by-step explanation:
the answer is c because you multiply 4 and 2 and get 8 and multiply 8 by 8 and get 64 then you use 4 again and multiply 64 by 4 so you get 256 and round that 254
Answer:
the answer is 7!
Step-by-step explanation:
divide 21 and 3 and you get 7