What vocabulary term describes symbols that represent numbers whose quantity we don't know?
1 answer:
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Use the geometric mean for right triangles as the sides are related to the hypotenuse. 30 - 6 = 24. We need that for our proportion. . We cross-multiply to get
. Taking the square root of both sides gives us that
, the second choice above.
Answer:
x = - 10 ±
Step-by-step explanation:
y = (x + 10)² , or
(x + 10)² = y ( take square root of both sides )
x + 10 = ± ( subtract 10 from both sides )
x = - 10 ±