Answer:
11
Step-by-step explanation:
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S= 70w + 750
s(19) = 70w x 19+350= 1680
so its 1680
Answer:
x=18
Step-by-step explanation:
Vertical angles are congruent. This means that they are equal to each other. So, to solve set them equal to each other and isolate x. First, set up the equation. Then, subtract x from both sides. Finally, add 11 to both sides and simplify.
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2) 
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Less than means to subtract so 2678 less than 10000 will be
=10000-2678
=7322