System A has ONE real solution
System B has NO real solutions
System C has ONE real solution
Answer:
60°
Step-by-step explanation:
Angle 1 is a vertical angle to 60° by the definition of a vertical angle.
Answer:
50
Step-by-step explanation:
4,500÷90=50
and to check
90×50=4500
Answer:
8.9 meters
Step-by-step explanation:
this seems like a problem where you can use the pythagorean theorem:
you know one of the two legs (6m) and the hypotenuse (9m), you must find the other leg
a^2 + 6^2 = 9^2
a^2 + 36 = 81
a^2 = 45
a =
or
·
which simplifies to be 3
or approx. 8.9 meters