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spin [16.1K]
3 years ago
11

F(x)=-4x^2+10x-8

Mathematics
1 answer:
vazorg [7]3 years ago
6 0

Answer:

Step-by-step explanation:

a = - 4

b = 10

c = - 8

The discriminate is

D = b^2 - 4ac

D = 10^2 - 4*(-4)(-8)

D = 100 -  128

D = - 28 which is not a nice number

Because the Discriminate has a minus result, there are no real zeros.

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The college student senate is sponsoring a spring break Caribbean cruise raffle, with proceeds going to the local homeless shelt
drek231 [11]

Answer:

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

Step-by-step explanation:

A student that purchases 10 tickets out of 2900 has a probability of winning the cruise that can be calculated as:

p=10/2900\approx0.00345

Each ticket cost $5, so he has spent $50 for the 10 tickets.

Then, the expected value of this operation is equal to the expected value of the earnings (probability of winning the prize multiplied by the value of the prize), minus the costs:

E(X)=p\cdot R-C\\\\E(X)=0.00345\cdot3000-50=10.35-50=-39.65

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

8 0
3 years ago
A twelve-sided die with sides labeled 1 through 12 will be rolled once. Each number is equally likely to be rolled.
kykrilka [37]

Answer:

1/6

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6 0
3 years ago
"Express the difference in the measures of center as a multiple of each measure of variation. Round your answers to the nearest
zimovet [89]

Answer:

unsure but i think the first one

Step-by-step explanation:

8 0
2 years ago
Write the recurring decimal 0.05 as a fraction in its simplest form
lidiya [134]

Answer:

1/20

Step-by-step explanation:

Step 1: Write the given number as the numerator and place 1 in the denominator right below the decimal point followed by the number of zeros required accordingly.

In this case, 0.05 has two numbers after the decimal, so, we place 100 in the denominator and remove the decimal point. This will make it 5/100

Step 2: Then, this fraction can be simplified. 5/100 = 1/20

Thus, 0.05 as a fraction is written as 1/20

6 0
2 years ago
Read 2 more answers
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ikadub [295]

Answer:

5 1/3

Step-by-step explanation:

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3 years ago
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