P(x) = 4/5......P(y) = 1/4.....P(x and y) = 1/5
they are independent because P(x) * P(y) = P(x and y)
Answer:
Step-by-step explanation:
Answer:
$125
Explanation:
Cost of meal = $100
+ 5 % sales tax = 0.05 × 100 = + 5
+ 20 % tip = 0.20 × 100 = <u> 20</u>
Total cost = $125
The total cost of the meal was $125.
Answer:
Step-by-step explanation:
-11 = a + 7 Given
-7 -7 Subtract 7 on each side to cancel out +7 and isolate variable
-18 = a Answer
Prove.
-11 = -18 + 7 Plug in variable value
-11 = -11
True.
