<em><u>The question is the base of the triangle, so we use the formula : b²=c²–a²</u></em>
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Forty-eight decreased by a number is the same as the difference of four time the number and 7. Find the number.
1 answer:
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Answer:
A
Step-by-step explanation:
given
16x² + 4 = 0 ( subtract 4 from both sides )
16x² = - 4 ( divide both sides by 16 )
x² = = -
[ take the square root of both sides ]
x = ± = ±
i (
= i )