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Kamila [148]
3 years ago
6

Can someone help me? find the solution for this system of equation ​

Mathematics
2 answers:
svet-max [94.6K]3 years ago
8 0

Answer:

(5/6, 8/5)

Step-by-step explanation:

Multiply the second equation by 2.  Then the resulting system will be:

12x + 15y = 34

-12x +10y = 6

... which, when simplified, results in 25y = 40.  Thus, y = 8/5

Substituting 8/5 for y in the second equation, we get

-6x + 5(8/5) = 3, or

-6x + 8 = 3, or -6x = -5.  Then x = 5/6

and the solution is (5/6, 8/5).

puteri [66]3 years ago
3 0

Answer:

(5/6, 8/5)

Step-by-step explanation:

We multiply the second equation by 2, and then add the equations together.

12x+15y=34

-12x+10y=6

------------------

25y=40

We divide by 25 on both sides, and get that y = 8/5. We substitute y into either of the equations.

-6x +5(8/5)=3

Do the multiplication.

-6x+8=3

Subtract 8 from both sides.

-6x=-5

Divide by -6 on both sides.

x=5/6.

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Step-by-step explanation:

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3 years ago
The solution set for the inequality x + 4 ≤ 1/2 (x - 3) includes -11 as an element.
Sindrei [870]

Answer:

<h2>x ≤ -11, Yes. The solution set include -11.</h2>

Step-by-step explanation:

x+4\leq\dfrac{1}{2}(x-3)\qquad\text{multiply both sides by 2}\\\\2x+8\leq1(x-3)\\\\2x+8\leq x-3\qquad\text{subtract 8 from both sides}\\\\2x\leq x-11\qquad\text{subtract x from both sides}\\\\\boxed{x\leq-11}

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3 years ago
Which of the following is the function F(x) if F^-1(x) = x+4/11?
Marianna [84]

Answer:

B. F(x) =X-4/11

Step-by-step explanation:

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Lets make y the subject;

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