You should ask your parent/guardian
or teacher if needed! Merry Christmas!
Answer:
x² +18x +81
Step-by-step explanation:
(a+b)²=a²+b²+2ab
(x+9)² = x²+9²+2*x*9= x² +18x +81
Add the two speeds together, then divide the two, this gives the average speed. Hope this was helpful!
6.71*108= 724.68 then divide that by 60 to see how far it goes per minute. Which is 12.078 then multiply by 90 so 1,087.02
