These are the elements of the matrix
Elements of the first row are h11 h12 h13, of the second row h21 h22 h23.
Than we can conclude that element h23 worth 75.
Good luck!!!
First, let's multiply the first equation by two on the both sides:
<span>8x + 7y = 39 /2
</span>⇒ 16x + 14y = 78
Now, the system is:
<span>16x + 14y = 78
</span><span>4x – 14y = –68
</span>
After adding this up in the column:
(16x + 4x) + (14y - 14y) = 78 - 68
20x = 10
⇒ x = 10/20 = 1/2
y can be calculated by replacin the x:
<span>8x + 7y = 39
</span>⇒ 8 · 1/2 + 7y = 39
4 + 7y = 39
7y = 39 - 4
7y = 35
⇒ y = 35 ÷ 7 = 5
Answer:
Step-by-step explanation:
The value of c = 64 makes the equation true.
<h3>What is an Equation ?</h3>
An equation is defined as the mathematical statement formed when two algebraic expression are equated by an equal sign.
It is given in the question that
x> 0 and y>0
![\rm \sqrt[3]{\dfrac{x^3}{cy^4} }= \dfrac{x}{4y\sqrt[3]{y}}\\\\\\{\dfrac{x^3}{cy^4} = \dfrac{x^3}{64y^3 \times y} \\\\\\\\\\\therefore\; from \;this \\\\c= 64\\](https://tex.z-dn.net/?f=%5Crm%20%5Csqrt%5B3%5D%7B%5Cdfrac%7Bx%5E3%7D%7Bcy%5E4%7D%20%7D%3D%20%5Cdfrac%7Bx%7D%7B4y%5Csqrt%5B3%5D%7By%7D%7D%5C%5C%5C%5C%5C%5C%7B%5Cdfrac%7Bx%5E3%7D%7Bcy%5E4%7D%20%3D%20%5Cdfrac%7Bx%5E3%7D%7B64y%5E3%20%5Ctimes%20y%7D%20%5C%5C%5C%5C%5C%5C%5C%5C%5C%5C%5Ctherefore%5C%3B%20from%20%5C%3Bthis%20%5C%5C%5C%5Cc%3D%2064%5C%5C)
The value of c = 64 makes the equation true.
To know more about Equation
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