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stira [4]
3 years ago
10

In a classroom of 28 students: 19 of the students have brown eyes 13 of the students wear glasses 7 of the students do not have

brown eyes or glasses how many brown-eyed students wear glasses? answer
Mathematics
2 answers:
V125BC [204]3 years ago
7 0

Total students = 28

Students with brown eyes = 19

students wear glasses = 13

Not brown eyes or no glasses = 7


Not brown eyes = 28 - 19 = 9

Not wearing glasses = 28 - 13 = 15

Not brown eyes and wearing glasses = 15 - 9 = 6

Brown eyes and wearing glasses = 13 - 6 = 7 <==== answer

AnnyKZ [126]3 years ago
5 0

Answer:7 is the answer

Step-by-step explanation:

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To find b you plug in the point (3, 2) into the equation

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The equation of the line that is parallel to the given equation is:

y = 3x - 7


To find the equation of the line that is perpendicular to the given equation, the slope has to be the exact opposite of the given slope. (you flip the sign and the number of the given slope to get the perpendicular line's slope)

The given slope is 3, the perpendicular slope is -\frac{1}{3}

y = mx + b

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To find b, you plug in the point (3 , 2) into the equation

2 = -\frac{1}{3} (3) + b

2 = -1 + b

3 = b

The equation of the line perpendicular to the given equation is:

y = -\frac{1}{3} x +3

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Step-by-step explanation:

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