Answer:

Step-by-step explanation:



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Answer:
C (x)
Step-by-step explanation:
The Vertex of an angle is the point at which the angle is located on, so in this case the vertex is X.
Subtrahend is the number that is getting subtracted from the minuend, and the result is called the difference. In other words:
Minuend - Subtrahend = Difference
So...
678 - 489 = 189
Hope that helps :)
Answer:
Q7) 25.5
Q8) 25
Q9) 10
Q10) 12.7
Q11) 34
Q12) 24
Step-by-step explanation:
Q7) c² = a² + b²
x² = 18² + 18²
x = √18² + 18²
x = 18√2 = 25.5
Q8) c² = a² + b²
x² = 20² + 15²
x = √20² + 15²
x = 25
Q9) c² = a² + b²
26² = 24² + x²
x = √26²-24²
x = 10
Q10) c² = a² + b²
x² = 9² + 9²
x = √9² - 9²
x = 9√2 = 12.7
Q11) c² = a² + b²
x² = 30² + 16²
x = √30² + 16²
x = 34
Q12) c² = a² + b²
25² = x² + 7²
x = √25² - 7²
x = 24
!!