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Svetlanka [38]
3 years ago
6

Why am I still using camera lenses

Mathematics
1 answer:
lubasha [3.4K]3 years ago
4 0
To be able to make sure your camera is in focus
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A total of 1 232 students have taken a course in Spanish, 879 have taken a course in French, and 114 have taken a course in Russ
ElenaW [278]

Answer:

n(S\cap F \cap R)=7

Step-by-step explanation:

The Universal Set, n(U)=2092

n(S)=1232\\n(F)=879\\n(R)=114

n(S\cap R)=23\\n(S\cap F)=103\\n(F\cap R)=14

Let the number who take all three subjects, n(S\cap F \cap R)=x

Note that in the Venn Diagram, we have subtracted n(S\cap F \cap R)=x from each of the intersection of two sets.

The next step is to determine the number of students who study only each of the courses.

n(S\:only)=1232-[103-x+x+23-x]=1106+x\\n(F\: only)=879-[103-x+x+14-x]=762+x\\n(R\:only)=114-[23-x+x+14-x]=77+x

These values are substituted in the second Venn diagram

Adding up all the values

2092=[1106+x]+[103-x]+x+[23-x]+[762+x]+[14-x]+[77+x]

2092=2085+x

x=2092-2085

x=7

The number of students who have taken courses in all three subjects, n(S\cap F \cap R)=7

3 0
3 years ago
What is the area of the following trapezoid?
xxMikexx [17]
A = (B + b)xH : 2 

A = (4.5+7.5) x 5 : 2

A = 12 x 5 : 2 

A = 60 : 2

A = 30 in²
3 0
3 years ago
Read 2 more answers
What is the interval notation for the compound inequality?
ZanzabumX [31]
7 beacuse 7 is bigger then 3 I think I took this quiz but got a bad grade
6 0
3 years ago
Refer to the image. (Actually read it)
Korvikt [17]

Answer:

(4, 5)

Step-by-step explanation:

5x + y = 25

-3x + 2y = -2

5x + y = 25

y = 25 - 5x

-3x + 2 * (25 - 5x) = -2

-3x + 50 - 10x = -2

-13x = -52

x = 4

5 * 4 + y = 25

20 + y = 25

y = 5

Solution: (4, 5)

8 0
2 years ago
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What is the unit value of the 6 in 216
otez555 [7]
The unit value for 6 in 216 is one
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3 years ago
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