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3 years ago

In a restaurant, if a customer orders a starter, then the probability that they

Mathematics

1 answer:

aleksley [76]3 years ago

3 0

Step-by-step explanation:

since in both cases there are always only 2 possible outcomes, the 2 probabilities together must always be 1.

so, if they had a starter then the probability of not ordering dessert is 1 - 1/5 = 4/5 = A.

and if they did not have a starter, then the probability of not ordering dessert is 1 - 2/3 = 1/3 = B.

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When computing the standard deviation, does it matter whether the data are sample data or data comprising the entire population?

Juliette [100K]

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3 years ago

Evaluate f(x) = 4x + 3x^2 − 5 when x = -2. 23 -1 -25 -49

frozen [14]

Answer:

f(-2) = -1

Step-by-step explanation:

One way of doing this is to substitute -2 for x in every place where x shows up:

f(x) = 4x + 3x^2 − 5 → f(-2) = 4(-2) + 3(-2)^2 − 5

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3 years ago

Ky wants to buy three shirts, which were originally priced at $49.96 each. The store will discount the price of the 3rd shirt by

frozen [14]

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Answer:

$44.49

Step-by-step explanation:

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With tax added, the cost is ...

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3 years ago

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lord [1]

Answer:

Step-by-step explanation:

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6) (after 2.3) Consider the infinite system of linear equations in two variables given by ax + by = 0 where (a, b) moves along t

Paraphin [41]

Answer:

Step-by-step explanation:

Given infinite system of linear equations is ax + by = 0

when (a,b) moves along unit circle in plane.

a) system having unique system (0, 0)

Since two of equation in thus system will be

$1.x+0.y=0\\x=0$

and

$0.x+1.y=0\\y=0$

It is clear that x = 0, y= 0 is the only solution

b) Linear independent solution in this system gives some set of solutions

$1.x+0.y=0\\\x=0$

and

$0.x+1.y=0\\y=0$

Vector form is

$\left[\begin{array}{ccc}1&0\\0&1\end{array}\right] =I$

c) for this equation if add 0x +0y = 0 to system , Nothing will change

Because [0,0] satisfies that equation

d) If one of the equation is ax + by = 0.00001

where 0.00001 is small positive number

so, the system will be inconsistent

Therefore, the system will have no solution.

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3 years ago