Average speed is given by [Total Distance] ÷ [Total Time]
Average speed =

km/hour
D is the correct answer
x+5=10: subtract 5 from both sides the 5 will cancel out leaving x=5
x+5=10
-5 -5
x=5
X° + 123° + 90° = 360° (angles at a point)
x° = 360° - 90° -123°
x° = 147°
The answer of x is 147°
Hope I can help you :)
Answer:
C
Step-by-step explanation:
Associative property states that when three or more numbers are added, the sum is the same regardless of the grouping.
This means that (4x + 13) + 11 is the same as C. 4x + (13 + 11)