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2 years ago

20 POIINNTSS FOR FAST ANSWERRRR

Mathematics

2 answers:

patriot [66]2 years ago

8 0

Answer:

first=19/5 or 3.8

second=2/5 or 0.4

Step-by-step explanation:

x+3y=5

2x+y=8

multiply by 3

6x+3y=24

subtract

5x=19

x=19/5

2×19/5+y=8

38/5+y=8

38+5y=40

5y=40-38=2

y=2/5

Anton [14]2 years ago

4 0

Answer:

https://www.algebra.com/algebra/homework/word/numbers/Numbers_Word_Problems.faq.question.826722.html

Step-by-step explanation:

go to this website, hope you understand it.

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Which is a solution to the equation? (x −2)(x + 5) = 18 x = −10 x = −7 x = −4 x = −2

Leona [35]

Answer:

Solutions:

$x=-7$

$x=4$

Step-by-step explanation:

$(x-2)(x + 5) = 18$

Expanding the factored form:

$x^2+5x-2x-10=18$

$x^2+3x-28=0$

Factoring the second-degree polynomial:

$(x+7)(x-4)=0$

This is true for

$x=-7 \text{ or } x=4$

4 0

3 years ago

Solve the differential equation. x y^2 y' = x + 1

timurjin [86]

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