Answer:
Step-by-step explanation:
Answer:Exact Form: x
=
±
√
41
−
7
Decimal Form:
x
=
−
0.59687576
…
,
−
13.40312423
…
Step-by-step explanation:Use the formula
in order to create a new term. Solve for x by using this term tocompletethe square.
Exact Form: x
=
±
√
41
−
7
Decimal Form:
x
=
−
0.59687576
…
,
−
13.40312423
…
3 is the answer cuz x/x cancels out and gives 1
Answer:
One is going 30 km/hr and one is 35 km/hr
Step by Step Solution:
So, 30x3= 90. The first went 90 miles in one direction
35x3=105. The second went 105 km/hr in the other direction.
105+90=195
Using it's formula, it is found that the mean of the discrete random variable is given by:
B. 30.47.
<h3>What is the mean of a discrete distribution?</h3>
The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.
Hence, considering the table, the mean of the discrete distribution is:
E(X) = 23 x 0.16 + 25 x 0.09 + 26 x 0.18 + 31 x 0.12 + 34 x 0.24 + 38 x 0.21 = 30.47.
Hence option B is correct.
More can be learned about the mean of a discrete random variable at brainly.com/question/26660401
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