I don't quite understand the ten strategy, or what EXACTLY you're asking. But, what you can do is when you add a one digit number plus a nine, just change the nine to a ten and subtract one. It is very easy. So, 7+10 equals 17, subtract one and you get 16 which is 7+9. It is always one less than anything plus 10.
Answer:
your right if you thin your wrong B can be right too
Step-by-step explanation:
Answer:
128* angle EFZ &angle BYG
Step-by-step explanation:
3.) $ 9.75| First you multiply 2.25 by 3, then 1.75 by 2 and add them together which gives you 10.25. Finally you subtract 10.25 from 20 which gives you 9.75
Mr Chan spent
![90\cdot 0.5 = 45](https://tex.z-dn.net/?f=90%5Ccdot%200.5%20%3D%2045)
dollars when he bought the shares. If he sells 45 shares at 3.80, he will gain
![45\cdot 3.8 = 171](https://tex.z-dn.net/?f=45%5Ccdot%203.8%20%3D%20171)
dollars. So, the net profit would be
![171-45 = 126](https://tex.z-dn.net/?f=171-45%20%3D%20126)