2^3 * 2^-5 = 2^(3 + (-5) = 2^(3 - 5) = 2^-2
First replace y with 15.
1/5x-10=30
Then just solve from there.
x=200
Answer:
D
Step-by-step explanation:
Answer:
0.4
Step-by-step explanation:
Given
60 % wear neither ring nor a necklace
20 % wear a ring
30 % wear necklace
This question can be Solved by using Venn diagram
If one person is choosen randomly among the given student the probability that this student is wearing a ring or necklace is


The sum of probabilty is equal to 1 because it completes the set
Therefore the required probabilty is 0.4