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Anon25 [30]
2 years ago
14

Use elimination to solve the system of equations given by 7x + 23y = 12 and 3x + 23y = -8​

Mathematics
2 answers:
Liono4ka [1.6K]2 years ago
7 0

\huge \purple{\tt{Answer:}}

Artyom0805 [142]2 years ago
6 0

Answer:

(5,-1)

Step-by-step explanation:

x=5

y= -1

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Out of 100 students,15 passed in english, 12 passed in mathematics, 8 in science, 6 in english and mathematics, 7 in mathematics
Lyrx [107]
Because there are 4 students who passed in all subjects, we can say that only 2 students passed in English and Mathematics only, only 3 students passed in Mathematics and Science only, and no one passed in English and Science only.

Given that we have deduced the number of students who passed in two subjects, we can now solve for the number of students who passed only one subject. 
                English = 15 - (4 + 2 + 0) = 9
                Mathematics = 12 - (4 + 3 + 2) = 3
                Science = 8 - (4 + 3 + 0) = 1

1. In English but not in Science,
                    9 + 2 = 11
2. In Mathematics and Science but not in English
                    3 + 3 + 1 = 7
3. In Mathematics only 
                             = 3
3. More than one subject only
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It will really be helpful if you draw yourself a Venn Diagram for this item. 
8 0
3 years ago
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dolphi86 [110]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Luis has a $10 and three $5 bills. He spends $12.75 on entrance fee to an amusement park and $8.50 on snacks. How much does he h
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3x5=$15
15+10=$25 total to spend

He spends 12.75+8.5= $21.25

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Answer:

Step-by-step explanation:

its 22.00 or just 22

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