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3 years ago

32. Which value of x will make the equation below true?

Mathematics

2 answers:

Sloan [31]3 years ago

7 0

It would be 81 or you can do 81/8 = 9

Illusion [34]3 years ago

6 0

The answer would be 81

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In a large school, it was found that 77% of students are taking a math class, 74% of student are taking an English class, and 70

Iteru [2.4K]

Answer:

0.81 = 81% probability that a randomly selected student is taking a math class or an English class.

0.19 = 19% probability that a randomly selected student is taking neither a math class nor an English class

Step-by-step explanation:

We solve this question working with the probabilities as Venn sets.

I am going to say that:

Event A: Taking a math class.

Event B: Taking an English class.

77% of students are taking a math class

This means that $P(A) = 0.77$

74% of student are taking an English class

This means that $P(B) = 0.74$

70% of students are taking both

This means that $P(A \cap B) = 0.7$

Find the probability that a randomly selected student is taking a math class or an English class.

This is $P(A \cup B)$ , which is given by:

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

$P(A \cup B) = 0.77 + 0.74 - 0.7 = 0.81$

0.81 = 81% probability that a randomly selected student is taking a math class or an English class.

Find the probability that a randomly selected student is taking neither a math class nor an English class.

This is

$1 - P(A \cup B) = 1 - 0.81 = 0.19$

0.19 = 19% probability that a randomly selected student is taking neither a math class nor an English class

6 0

3 years ago

Please help with the picture below

elena-s [515]

Answer:

Step-by-step explanation:

Remark

The angles are marked as alternate interior angles. To be parallel, they must be equal. In other words x - 20 must equal 52. That's all you have to do. Just equate the 2 givens and solve.

Givens

x - 20 is one angle

52 is the other.

Solution

x - 20 = 52 Add 20 to both sides.

x - 20 + 20 = 52 +20 Combine

x = 72

Answer: C

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2 years ago

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Ivahew [28]

Answer:

its . 6

Step-by-step explanation:

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3 years ago

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umka2103 [35]

Answer:

x = 53

Step-by-step explanation:

Vertical angles are equal

3x - 10 = 149

3x = 159

x = 159 / 3

x = 53

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3 years ago

An angle measuring 22 degrees is bisected what is the measure of the angle that are formed

iogann1982 [59]

An angle that is *bisected* is an angle that is *cut in half*. What angle is half of 22 degrees?

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4 years ago

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