Need help plz I don't know how to do this
1 answer:
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Answer:
The speed of the jet is 410 mph.
Step-by-step explanation:
The jet and the passenger plane flew in opposite directions.
Given that the passenger plane flew at a speed of 450 mph, then after 11 hours, the passenger plane will fly (450 × 11) = 4950 miles.
Again, given that after 11 hours the passenger plane and the jet are 9460 miles apart.
Therefore, in 11 hours the jet flew (9460 - 4950) = 4510 miles.
Hence, the speed of the jet is mph. (Answer)
Answer:
14
Step-by-step explanation:
We are given that
Total number of students who select their favorite radio station=30
Number of student who select their favorite radio station K=
Number of student who select their favorite radio station L=
We have to find that number of student who select station M.
Remaining students=30-(10+6)=30-16=14
Number of students who select their favorite radio station M=14
Hence, the number of students who select their favorite radio station M=14
Answer: 14
Answer:
Helene is right
Step-by-step explanation:
Mathematically, the expected values is defined as the sum of all the possible outcomes that an event can have times the probality of the respective outcome:
x = ∑ p *i,
where x is the expected value, i represents every outcome that can occur, and p is the probability of said outcome.
Now, for the case of a dice, the expected value would be:
x = 1 * + 2 *
+ 3 *
+ 4 *
+ 5*
+ 6 *
,
as every outcome has the same chance of happenning. Solving we get that:
x= *(1 +2 +3 +4+5+6) =
* 21 = 3.5
Helene is right.