Please help, see pic attachment
1 answer:
Answer:
the answer is 30
Step-by-step explanation:
because it is an equilateral triangle all sides are the same so if you set 3x+15 equal to 7x-5 and solve for x you get 4x=20 and x= 5
when you plug 5 in to each equation you get 30 for both sides and so it proves that the answer is 30
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The area of the triangle is 60 cm
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Step-by-step explanation:
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Answer:
11.25
Step-by-step explanation:
15*(1-25%)=11.25
