Well flat means open so 180°
180° - 50° = 130° is the answer
Answer:
Step-by-step explanation:
1÷3
=3+, 3×
1÷
The relationship between the legs and hypotenuse of a 45 45 90 triangle can be written as:
1: 1: square root 2
Answer:
c
Step-by-step explanation:
because i am smart
Let
x = number of minutes of local calls.
y = number of minutes of international calls.
By writing the system of equations we have:
0.06x + 0.15y = 69.84
x + y = 852
Solving the system
Clear y from equation two
y = 852-x
Replace y in equation 1
0.06x + 0.15 (852-x) = 69.84
Clear x
0.06x + 127.8 - 0.15x = 69.84
127.8 - 69.84 = 0.15x -0.06x
57.96 = 0.09x
x = 57.96 / 0.09 = 644
x = 644
Replace x in any of the two equations and clear y:
x + y = 852
y = 852-644
y = 208
answer
number of minutes of local calls = 644
number of minutes of international calls = 208
