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2 years ago

QUESTION 1 Given the equation of the circle (x + 7) + (y – 5) 2 = 64, identify the center.

Mathematics

1 answer:

o-na [289]2 years ago

6 0

Answer:

center=(-7,5)

Step-by-step explanation:

The center form of the circle equation is in the format (x – h)^2 + (y – k)^2 = r^2, with the center being at the point (h, k).

you can find center by making equal to zero each term, then:

x+7 = 0

x=-7

y-5 = 0

y=5

then the center is (-7,5).

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2 years ago

g A 5 foot tall man walks at 10 ft/s toward a street light that is 20 ft above the ground. What is the rate of change of the len

vredina [299]

Answer:

$-\frac{10}{3}ft/s$

Step-by-step explanation:

We are given that

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$\frac{dy}{dt}=-10ft/s$

Height of street light=20ft

We have to find the rate of change of the length of his shadow when he is 25 ft form the street light.

ABE and CDE are similar triangle because all right triangles are similar.

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$4=\frac{x+y}{x}$

$4x=x+y$

$4x-x=y$

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Hence, the rate of change of the length of his shadow when he is 25 ft from the street light= $-\frac{10}{3}ft/s$

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2 years ago

I'm sooo confused...................................

user100 [1]

Answer:

8.14 is the answer

Step-by-step explanation:

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