Answer: 130
Step-by-step explanation:
Let x be the original number of hip- hop CDs in the music store.
Given : A music store has sold 3/5 of their hip-hop CDs, but 10 were returned.
i.e. The number of hip- hop CDs in the store will be :
Original No. of CDs - CDs sold + CDs Returned
If the store has 62 Hip-Hop CDs now , then required euation will be :-
Subtract 10 from both sides , we get
Hence, the number of CDs they originally have = 130
Answer:
63
Step-by-step explanation:
9 x 14 = 126/2 = 63
0.85 is the decimal equivalent of 17/20.
Answer:
Step-by-step explanation:
Sorry this is a tough one and I don’t want to give you the wrong answers sorry again
We first determine the z-scores for the given x-values of 64 and 96.
For x = 64: z = (64 - 80) / 8 = -2
For x = 96: z = (96 - 80) / 8 = 2
Therefore we find the probability that -2 < z < 2, which is around 0.95. Therefore, out of 100 students, approximately 100(0.95) = 95 students will weigh between 64 and 96 pounds.
