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AlexFokin [52]
3 years ago
7

HELP MEEEEEEEEEEEE PRETTY PLEASE

Mathematics
2 answers:
Mama L [17]3 years ago
7 0

Answer:

Step-by-step explanation:

y=15, x=53, z=36

leonid [27]3 years ago
4 0
Y=15
x=53
z=36
i think that's right
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Illusion [34]

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KON

Step-by-step explanation:

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2 years ago
All the fourth-graders in a certain elementary school took a standardized test. A total of 85% of the students were found to be
Aneli [31]

Answer:

There is a 2% probability that the student is proficient in neither reading nor mathematics.

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that a student is proficient in reading

B is the probability that a student is proficient in mathematics.

C is the probability that a student is proficient in neither reading nor mathematics.

We have that:

A = a + (A \cap B)

In which a is the probability that a student is proficient in reading but not mathematics and A \cap B is the probability that a student is proficient in both reading and mathematics.

By the same logic, we have that:

B = b + (A \cap B)

Either a student in proficient in at least one of reading or mathematics, or a student is proficient in neither of those. The sum of the probabilities of these events is decimal 1. So

(A \cup B) + C = 1

In which

(A \cup B) = a + b + (A \cap B)

65% were found to be proficient in both reading and mathematics.

This means that A \cap B = 0.65

78% were found to be proficient in mathematics

This means that B = 0.78

B = b + (A \cap B)

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85% of the students were found to be proficient in reading

This means that A = 0.85

A = a + (A \cap B)

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Proficient in at least one:

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What is the probability that the student is proficient in neither reading nor mathematics?

(A \cup B) + C = 1

C = 1 - (A \cup B) = 1 - 0.98 = 0.02

There is a 2% probability that the student is proficient in neither reading nor mathematics.

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3 years ago
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We can now find x by making both equations equal to each other and solving.

11x+1=13x-5

Solve.

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Let x = Barbie's number
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Does the diagram below represent balanced or unbalanced forces​
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Step-by-step explanation:

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