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adelina 88 [10]
3 years ago
12

Someone help me with problem 2 I do not understand. Help please and thank you

Mathematics
1 answer:
serious [3.7K]3 years ago
7 0

The height of trapezoid is: B) 5.2 cm

Step-by-step explanation:

Given formula of area of a trapezoid

A = \frac{1}{2}(b_1+b_2)h

Given

A = 57.2 cm^2

b1 = 10 cm

b2 = 12 cm

h = ?

Putting values in the formula

57.2 = \frac{1}{2}(10+12)h\\57.2 = \frac{1}{2}(22)h\\57.2 = 11h

dividing both sides by 11

\frac{57.2}{11} = \frac{11h}{11}\\h = 5.2\ cm

Hence,

The height of trapezoid is: B) 5.2 cm

Keywords: Area, height

Learn more about area at:

  • brainly.com/question/515115
  • brainly.com/question/5144640

#LearnwithBrainly

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Answer:

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Step-by-step explanation:

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8 0
2 years ago
An airline knows that 5 percent of the people making reservations on a certain flight will not show up. Consequently, their poli
kenny6666 [7]

Answer:

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Step-by-step explanation:

if the probability of choosing a passenger that will not show up is 5% , then the probability of choosing a passenger that will show up is 95%.

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P(X) = n!/((n-x)!*x!)*p^x*(1-p)^(n-x)

where

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therefore the probability that the number does not exceed the limit of 50 passengers is:

P(X≤50)=  ∑P(X=i)  from i=0 to i=50   =F(50)

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therefore the probability that there will be a seat available for every passenger who shows up is 0.74

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3 years ago
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