PLEASE HELP ME I NEED THE ANSWER TO THIS

Mathematics

2 answers:

Lubov Fominskaja [6]2 years ago

8 0

Answer:

295sq feet

Step-by-step explanation:

25*10=250

5*5=25

5*4=20

250+25+20=295

jenyasd209 [6]2 years ago

4 0

Answer:

295

Step-by-step explanation:

295

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$a. \quad\dfrac{\left|\begin{array}{cc}148&14\\246&5\end{array}\right|}{\left|\begin{array}{cc}-2&14\\3&5\end{array}\right|}=52$

Step-by-step explanation:

To find the value of x, Cramer's rule says you replace the x-coefficients with the equation constants to form the matrix whose determinant is the numerator of the fraction. The denominator is the determinant of the matrix of coefficients. The equation constants are 148 and 246, so you expect to find those in the first column of the numerator (answer choices A and C).

$\dfrac{\left|\begin{array}{cc}148&14\\246&5\end{array}\right|}{\left|\begin{array}{cc}-2&14\\3&5\end{array}\right|}=\dfrac{-2704}{-52}=52$