3 years ago

Now try 50 for x. If x=50,what I'd y when y=x-20? Does that work with the other equation?

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

5 0

X= 50
Replace the x with the given number.
Y= 50-20
Y= 30

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3 years ago

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How do I work out this problem?

cluponka [151]

First we need to find ∡PRQ. To do this we can use the fact that the sum of the interior angles of a triangle is 180°:

$180=R+P+Q$
$180=R+40+105$
$180=R+145$
$R=180-145$
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Now, we can use the fact that a strait line (like SRQ) is also 180°:
$SRQ=180-R$
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$SRQ=145$ °