If 20-2.3=17.7, then if you add 17.7 to 2.3. it equals 20 which is called the communicative property because whatever you add or subtract, the answer is the same
17.7+2.3=2.3+17.7
Answer:
10 times 2x = 30
Step-by-step explanation:
Tried my best
Answer:
a
Step-by-step explanation:
cause you go up 14 and over 6 then you divid by 2 and get 7/3
Answer:
a = 8
Step-by-step explanation:
-5(a + 3) = - 55
- 5a - 15 = - 55
55 - 15 = 5a
5a = 40
a = 40 : 5
a = 8
The answer is 12. How did I get it?
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A B C
AC = 21 (the whole line adds up to 21)
AB = 9 (half of the line is 9)
BC = AC-AB
21- 9 = 12 so BC is 12
