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mixas84 [53]
3 years ago
12

Angle x and y are complementary. Angle x is supplementary to a 128º angle.

Mathematics
2 answers:
tiny-mole [99]3 years ago
4 0

Answer:

x = 52

y = 38

Step-by-step explanation:

Angle x is supplementary to a 128º angle.

Supplementary angles add to 180

x+128 = 180

Subtract 128 from each side

x+128-128 = 180-128

x =52

Angle x and y are complementary.  

Complementary angles add to 90

x+y =90

52+y =90

Subtract 52 from each side

52-52 +y = 90-52

y = 38

Mekhanik [1.2K]3 years ago
3 0

Answer:

x = 52°

y = 38°

Step-by-step explanation:

x = 180 - 128

x = 52

y = 90 - 52 = 38

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We learned in Exercise 4.18 that about 90% of American adults had chickenpox before adulthood. We now consider a random sample o
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Answer:

a) 108 people with a standard deviation of 3.286335

b) No

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Step-by-step explanation:

This situation can be modeled with the Binomial Distribution which gives t<em>he probability of an event that occurs exactly k times out of n, and is given by </em>

<em>\large P(k;n)=\binom{n}{k}p^kq^{n-k} </em>

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The probability that 105 or fewer people in this sample have had chickenpox in their childhood is

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d)

How does this probability relate to your answer to part (b)?

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Answer:

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