A forest fire spreads in a circular pattern with the radius changing at the rate of 50 miles per hour. At what rate is the fire spreading when the diameter of the fire is 310 miles? A.
48.694 m2/h
B.
155 m2/h
C.
15,500 m2/h
D.
48,694.69 m2/h

why can't you?

step-by-step explanation:

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step-by-step explanation:

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)

think the answer is 30 degrees. if not than it is 20 degrees. not 100% sure. let me know if it was right.

gill russ