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3 years ago

Solve each system by substitution. 5) 5x + 3y =-23 y = 4

Mathematics

1 answer:

docker41 [41]3 years ago

3 0

Answer:

(- 7, 4 )

Step-by-step explanation:

Given the 2 equations

5x + 3y = - 23 → (1)

y = 4 → (2)

Substitute y = 4 directly into (1_

5x + 3(4) = - 23, that is

5x + 12 = - 23 ( subtract 12 from both sides )

5x = - 35 ( divide both sides by 5 )

x = - 7

Solution is (- 7, 4 )

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Makovka662 [10]

Answer:

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This also gives you the answer to your next two questions.

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3 years ago

Adding and subtracting mixed numbers with unlike denominators

Agata [3.3K]

Answer:

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So that both the denominators are 10. And the denominator that was once 5. The numerator of that fraction also needs to be timed by 2.

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3 years ago

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3 years ago

What are 3 ratios that are equivalent to 18:4

MAXImum [283]

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3 years ago

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A movie theater has a seating capacity of 333. The theater charges $5.00 for children, $7.00 for students,

pantera1 [17]

Answer:

182 children, 91 adults, 60 students

Step-by-step explanation:

The quantity of adults is x, then the quantity of children are 2x, the quantity of students is 333-x-2x=333-3x. The charge from all adults is 12x, students gave 7*(333-3x), children gave 5*2x=10x, the sum of all money is 2422

12x+ 7(333-3x)+10x=2422

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333-91-182= 60- the amount of students

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3 years ago