9. -5(4+6r)
-20-30r
-20-30(4)=-20-120=-140
10. -9-n/3
-9-9/3=-9-3=-12
answers: -140, -12
Answer:
3:4
Step-by-step explanation:
probability = what wanted : total outcome
= 3 heads : 4 tosses
= 3 : 4
a. obtuse angle
b. right angle
c. reflex angle
d. straight
e. acute angle
