Answer:
b = (d - c)/a
Step-by-step explanation:
ab + c = d
ab = d - c
b = (d - c)/a
Answer:
0.01
Step-by-step explanation:
Assuming the deck is the national playing deck with 52 cards.
Your probability of getting a 3 from the entire deck is 4/52. This number is the same for 10.
To get the probability of pulling a 3 and a 10 afterwards, you must multiply these two fractions (you're expecting a lower percentage).

Answer:
Gwen's ACT score is 1.2 standard deviations above the mean
if i'm wrong i'm rlly rlly sorry!!