Since it's a right triangle you can use the Pythagorean theorem or Trig (Soh Cah Toa).
I'll just use the Pythagorean theorem : a² + b² = c²
a = 9
b = x
c = 18
9² + x² = 18²
81 + x² = 324
x² = 324 - 81
x² = 243
x = √(243)
factor 243 to find a perfect square
x = √(3*81)
x = 9√(3)<u />
Answer:
First one
Step-by-step explanation:
It is an acute triangle because none of its angles are equal to (right) or above (obtuse) 90 degrees.
C ) sum
hope it helped...
sum is summation
Answer:
Inequality Form: m > 7/12
Interval Notation: (7/12, ∞)
