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3 years ago

Please help--

Mathematics

1 answer:

lara [203]3 years ago

4 0

The area of $PQRST$ equals to the sum of areas of the triangles it consists of. So,

$A(\mathrm{PQRST})=A(\mathrm{PQR})+A(\mathrm{PRS})+A(\mathrm{PST})=10.2+11.5+16.3=\boxed{38}$

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Read 2 more answers

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3 years ago

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$\ge \:or\: \le$

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So we choose a point in the solution region to discriminate between A and B.

Let us choose the origin since that is easy to evaluate.

We substitute into option A to get.

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The above statements are false

We now substitute into option B

$y\ge 3x-1\:and\: x+ 3y \le 6$

$0\ge 3(0)-1\:and\: 0+ 3(0) \le 6$

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Both statements are true, therefore the correct answer is option B.

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4 years ago