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Sonja [21]
3 years ago
13

7) Suppose that n n(A)=15, n(An B)=5, and n(AUB) = 30. Find n(B).

Mathematics
1 answer:
Aleks [24]3 years ago
8 0
ughh,i’m stuck on this 2.
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Use the functions h(x) = 2x - 5 and t(x) = 6x + 4 to complete the function operations listed below.
Rom4ik [11]

Answer:

See below for answers (in bold) and explanations

Step-by-step explanation:

Part A: (h+t)(x) = h(x) + t(x) = (2x-5) + (6x+4) = 2x - 5 + 6x + 4 = 8x - 1

Part B: (h*t)(x) = h(x) * t(x) = (2x-5) * (6x+4) = (2x)(6x) + (2x)(4) + (-5)(6x) + (-5)(4) = 12x² + 8x - 30x - 20 = 12x² - 22x - 20

Part C: h(t(x)) = h(6x + 4) = 2(6x + 4) - 5 = 12x + 8 - 5 = 12x + 3

3 0
3 years ago
A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the
Yuri [45]

Answer:

a. a parameter.

Step-by-step explanation:

A parameter is a property that describes the whole population, while a statistic is a property pertaining to a sample or sub-set of the population.

In this example, the average content of 4 ounces pertains to the 121 bottles sample and thus is a statistic. While the standard deviation of the population is mentioned to be 0.22 ounces, therefore 0.22 is a parameter.

8 0
3 years ago
A ray is made up of an infinite number of points?
oksian1 [2.3K]

Answer:

yes

Step-by-step explanation:

a ray goes infinitely I 1 direction so yes it would contain infinite points

8 0
4 years ago
gwen was cutting out some fabric for a friend she cut a piece yhat was 5 centimeters wide and 4 centimeters long what is the per
Valentin [98]
5+4=9 so 9 is the perimeter of the object cause perimeter is adding
8 0
3 years ago
Read 2 more answers
3 bags of packing peanuts are used to fill 2 boxes. how many bags of packing peanuts does each each box use .bettween whitch 2 w
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Between 0 and 1
it is 0.66 each
3 0
4 years ago
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