Answer:
1. 7
2. 17/12 can be a mixed number
117
Step-by-step explanation:
(x+3) is 13 because x is 10 so 10+3 is 13 and then 9 so 13×9 is 117
30cm
First you want to add the decimals 9.5 and6.5 so you get 16 then you add the other 14 cm to get a total of 30
You'd solve this equation by writing two equations. I'd call treadmills x and stationary bikes as y. The two equation would be x+y=25 and y=x+7. You'd then plug the second equation into the first equation to get x+(x+7)=25. You'd combine like terms, making it 2x+7=25. You'd then subtract 7 from both sides to get 18 and divide that by 2 to get 9. You have 9 treadmills. Finally, you'd plug 9 in for x in the equation y=x+7, to get 16 for stationary bikes.
Answer:
i think the answer might be E.