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torisob [31]
3 years ago
7

Solve the system of equations and choose the correct ordered pair.

Mathematics
2 answers:
mafiozo [28]3 years ago
8 0
4x + 5y = 22 ⇒ Equation 1
2x + 3y = 12 ⇒ Equation 2

2(2x + 3y) = 2(12)
4x + 6y = 24 ⇒ Equation 3

Equation 1 - 3
(4x - 4x) + (5y - 6y) = 22 - 24
-y = -2
y = 2

Substitude y into Equation 1,
4x + 5(2) = 22
4x + 10 = 22
4x = 12
x = 3

(3,2)
Answer is A.
serg [7]3 years ago
7 0
<h2>Answer: (3,2)</h2>

Still the right anser on APEX as of 4/29/19.

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Can someone please check if I did this math question correctly? Thank you.
VashaNatasha [74]

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Step-by-step explanation:

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3 years ago
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Does the set {t, t Int} form a fundamental set of solutions for t^2y" -- ty' +y = 0?
Ivanshal [37]

Answer:

yes

Step-by-step explanation:

We are given that a Cauchy Euler's equation

t^2y''-ty'+y=0 where t is not equal to zero

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We have to find  the solutions are independent or dependent.

To find  the solutions are independent or dependent we use wronskain

w(x)=\begin{vmatrix}y_1&y_2\\y'_1&y'_2\end{vmatrix}

If wrosnkian is not equal to zero then solutions are dependent and if wronskian is zero then the set of solution is independent.

Let y_1=t,y_2=t ln t

y'_1=1,y'_2=lnt+1

w(x)=\begin{vmatrix}t&t lnt\\1&lnt+1\end{vmatrix}

w(x)=t(lnt+1)-tlnt=tlnt+t-tlnt=t where t is not equal to zero.

Hence,the wronskian  is not equal to zero .Therefore, the set of solutions is independent.

Hence, the set {t , tln t} form a fundamental set of solutions for given equation.

6 0
4 years ago
Please help asap. Thank you! :)
Kruka [31]

When he cubed ,

Result is x³

On further squaring x³, he got = (x³)²

{x}^{6}

<h3>Therefore, k = 6</h3>

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3 years ago
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rusak2 [61]

Answer:

Step-by-step explanation:

3x3

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3 years ago
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