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dimulka [17.4K]
3 years ago
9

"A class of 30 students took midterm science exams. 20 students passed the chemistry exam, 14 students passed physics, and 6 stu

dents passed both chemistry and physics. Which Venn diagram correctly represents this information? (See attachment)
A) Venn diagram 1

B) Venn diagram 2

C) Venn diagram 3

D) Venn diagram 4"

Mathematics
2 answers:
Nana76 [90]3 years ago
6 0

Answer:

Option B). Venn diagram 2

Step-by-step explanation:

A class of 30 students took midterm science exams.

20 students passed chemistry exam, 14 passed physics and 6 students passed both physics and chemistry.

Since 6 students are common in both, so students who passed chemistry exam only will be = 20 - 6 = 14

And students who passed physics only = 14 - 6 = 8

So students who passed chemistry only are 14, students physics only are 8 and students who passed both the subjects are 6.

Moreover, students who couldn't pass any subject = 30 - (14 + 8 + 6) = 30 - 28 = 2

Option B) Venn diagram 2 is the correct option.

katen-ka-za [31]3 years ago
4 0
The answer is the letter B 
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Answer:

x = 1

Step-by-step explanation:

Given

8x - 2(x - 7) = 20 ← distribute parenthesis on left side

8x - 2x + 14 = 20, that is

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6x = 6 ( divide both sides by 6 )

x = 1

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3 years ago
I do not understand this question I am confused!
kati45 [8]
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3 years ago
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For a production of sweeney todd in las vegas, orchestra seats cost $42 and mezzanine seats cost $25. if a group of 14 people sh
Lesechka [4]

Answer: 8 orchestra seats and 6 mezzanine seats.

Step-by-step explanation:

Let be "o" the number of orchestra seats they bought and "m" the number of mezzanine seats they bought.

Set up a system of equations:

\left \{ {{42o+25m=486} \atop {o+m=14}} \right.

You can apply the Substittution Method to solve the system of equations:

1. Solve for "o" from the second equation:

o=14-m

2. Substitute it into the first equation and solve for "m":

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4 0
3 years ago
If and , find .<br><br> A. <br> B. <br> C. <br> D.
trapecia [35]
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Explanation:

1) polynomials given:

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2) question: find (f + g) (x)

That means that f(x) + g(x), so you have to add up the two polynomials given.

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4 0
3 years ago
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