I'm assuming you mean triangle angles?
If so, all angles add up to 180 so combine them and set them equal to 180.
51+82+5x+2=180
135+5x=180
5x=45
x=9
Step-by-step explanation:
9:
A=V/t
A=8.0m/s•1/2.0s
A=8.0m/2.0s²
A=4.0m/s²
10:
V=A•time
V=4.0m/s²•2.3s
V=9.2m/s
11:
V=A•t
24.0=5.6t
4.3s=t
Answer:
Words for dividing:
The problem is asking you to divide, because the key word is, "fill empty egg cartons that each hold"
So Mary will fill each carton with 12 eggs each until she runs out.

<em>12 goes into 216 eighteen times exactly.</em>
<em />
<em>and the result is(R means leftovers, which are none here)...</em>
<em />
since division is separating into equal parts but since there are 15 counters and 8 counters there the same so you can compare them and the final equation would be 15+8/x. let x= the number of kids