7x*7x=49x^2, so the lot measures 49x^2.
The sports field, however, measures 5x*5x=25x^2.
The difference between these is 49x^2-25x^2=
, or B.
The sports field, however, measures 5x*5x=25x^2.
The difference between these is 49x^2-25x^2=
Solve for y.
1 answer:
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Answer:
10
Step-by-step explanation:
The radius is the magnitude of the complex number that is the difference between any point on the circle and the center point. A suitable calculator can tell you that magnitude:
║(8+7i) - (2-i)║ = √((8-2)² +(7-(-1))²) = √(36+64) = √100 = 10
