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Marianna [84]
3 years ago
5

If H is the set of vectors    2a ab 3b    in R 3 for all real a and b, then H is closed under scalar multiplication. True

or False? 1. TRUE 2. FALSE 008 1
Mathematics
1 answer:
hodyreva [135]3 years ago
6 0

Answer:

2. false

Step-by-step explanation:

it is scalar multiplication cannot generate vector H

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babymother [125]

Answer:

B would equal -4

Step-by-step explanation:

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2 years ago
A game of chance involves rolling an unevenly balanced 4-sided die. The probability that a roll comes up 1 is 0.21, the probabil
WITCHER [35]

Answer:

2.65 dollars

Step-by-step explanation:

The expected value for a discrete variable is calculated as:

E(x)=x1P(x1) + x2P(x2) + ... + xnP(xn)

Where x1, x2, ... , xn are the possibles values of the variable and P(x1), P(x2), ... , P(xn) are the probabilities of x1, x2, ... , xn respectively.

In this case, the roll can comes up 1, 2, 3 or 4 and you can win 1, 2, 3 or 4 dollars respectively. So, taking into account that they are mutually exclusive events, the probability that the player win 1, 2, 3 or 4 dollars is:

P(1) = 0.21

P(2) = P(1∪2) - P(1) = 0.42 - 0.21 = 0.21

P(3) = P(2∪3) - P(2) = 0.51 - 0.21 = 0.3

P(4) = 1 - P(1) - P(2) - P(3) = 1 - 0.21 - 0.21 - 0.3 = 0.28

Therefore, If you win the amount that appears on the die the expected winning are:

E(x) = $1P(1) + $2P(2) + $3P(3) + $4P(4)

E(x) = $1(0.21) + $2(0.21) + $3(0.3) + $4(0.28)

E(x) = $2.65

4 0
3 years ago
If f(x)= x^0+x^2/3+x^-2/3. Find f(8(
Serjik [45]
F(8)= 8^0+8^2/3+8^-2/3
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3 years ago
Which relation is NOT a function? Explain your answer.
maw [93]
#2 or B is not a function because it has 3 as X twice
8 0
2 years ago
Find the general solution of the given differential equation. x2y' + xy = 8 y(x) = give the largest interval over which the gene
topjm [15]
x^2y'+xy=8
xy'+y=\dfrac8x
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which wouldn't be a valid solution over any interval containing x=0.
5 0
2 years ago
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