Answer:
First we substitute
4(-3) - 6(-1)
-7 -6
-13
Step-by-step explanation:
Answer:
A=50 B=40 C=90
Step-by-step explanation:
B is a right angle so its automatically 90 degrees since A=50 and a triangle has to be 180 degrees 90+50= 140, 180-140=40.
Answer:
81
Step-by-step explanation:




Step-by-step explanation:
