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3 years ago

Find the area. will mark brainliest

Mathematics

2 answers:

kondor19780726 [428]3 years ago

7 0

Answer:

240

Step-by-step explanation:

16*8=128

3+3+8=14

14*16=224

224/2=112

112+128=240

Nezavi [6.7K]3 years ago

7 0

240 is the answer

Step-by-step explanation:

area of a rectangle =l*b

8*16=128

area of a triangle =1/2*b*h

1/2*14*16=112

final area=128+112=240

please make me brainliest

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Step-by-step explanation:

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For this problem we know that:

$Det(A) = |A|=\left|\begin{array}{ccc}4&-6\\8&-2\\\end{array}\right|$

Solving we have:

$|A|= 4*(-2) -(-6)*8\\\\|A|=40$

$Det(A_X) = |A_X|=\left|\begin{array}{ccc}38&-6\\26&-2\\\end{array}\right|$

Solving we have:

$|A_X|=38*(-2) - (-6)*26\\\\|A_X|=80$

$Det(A_Y) = |A_Y|=\left|\begin{array}{ccc}4&38\\8&26\\\end{array}\right|$

Solving we have:

$|A_Y|=4*(26) - (38)*8\\\\|A_Y|=-200$

Finally

$x =\frac{|A_X|}{|A|} = \frac{80}{40}\\\\x=2$

$y =\frac{|A_Y|}{|A|} = \frac{-200}{40}\\\\y=-5$

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