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:
64 boys.
Step-by-step explanation:
There are 3 girls for every 8 boys.
24/3 = 8
8 * 8 = 64
Answer:
Answer → C) 121°
Step-by-step explanation:
» Let the wanted angle be x
Answer:
x=1/3
Step-by-step explanation:
9x+5-3=5
9x=3
x=1/3
Answer:
13-+4
Step-by-step explanation:
