I am so sorry I can't help you. I don't want to give you the wrong answer. Those questions are confusing.
Answer:
1/3
Step-by-step explanation:
20/60 = 1/3
60 mins in the hour;
20 missed;
20/60 probability of friend calling in the missed 20 mins.
Answer:
x = -5
Step-by-step explanation:
move the variable tothe left hand side change the sign
-x-7= -2
Calculate the sum
-x =5
change the sign on both of the equations
x =
Answer:
-94
Step-by-step explanation:
t² + 21t - 56
(-2)² + 21(-2) - 56
4 - 42 - 56
-38 - 56
-94
Best of Luck!
Step-by-step explanation:
39500 x 103 = 4,068,500
in scientific notation, that ia 4.0685 x 10⁶
