Answer:
There were 333 seniors in 1990
153 seniors had jobs in 2010.
Step-by-step explanation:
Let the number of high school seniors in 1990 = x
75% of x had jobs in 1990
In 2010 there were 50 more seniors. That is, the number of seniors is x+50.
40% of (x+50) had jobs in 2010.
Total number of jobs in both years = 403.
\[0.75 * x + 0.4 * (x + 50) = 403\]
\[0.75 * x + 0.4 * x + 20 = 403\]
=> \[1.15 * x = 403 - 20\]
=> \[1.15 * x = 383\]
=> \[x = 383/1.15\]
=> \[x = 333\]
Number of seniors having job in 2010 = 0.4 * (333 + 50) = 0.4 * 383 = 153.2 = 153(approx)
number of MP3 players: 4500 based on information given, 2 out of 50 MP3 players are defective. this means every 50 samples, 2 would be defective 4500/50 = 90 90 • 2 = 180 so, your final answer would be: 180 MP3 players in the shipment are likely to be defective
Answer: no solution
Step-by-step explanation: the answer will be negative
Let number of hits by Sanchez be x.
Number of hits by Washington = 18 + x
Total number of hits = 292
x + 18 + x = 292
2x + 18 = 292
2x = 274
x = 137
Hence, Sanchez has 137 hits and Washington has 155 hits.
Answer: 11/30
Step-by-step explanation: looking at this question that was given to us and to find the probability, then we will go by saying that;
Probability of an event (E) = number of outcome of Event E/total number of all event
Prob(Basebase player)=11/30
Going by this, then we are going to have our answer as 11/30
