Need help with solving a problem with elimination method
1 answer:
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For this case we have that the variable "x" represents the number of hours that Leticia uses to take care of children on Saturday.
IF on Friday I use 4 hours ($ 8 each) and on Saturday "x" hours ($ 8 each) obtaining a profit of $ 72, we have the following equation:
We apply distributive property:
So, on Saturday she spent 5 hours.
Answer:
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Sum of the interior angles of any triangle is 180° .
Thus ;
Subtract sides 138°
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