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3 years ago

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The water level in a lake changed by -28 centimeters in 7 days. The water level changed by the same amount each day. How much di

d the water level change each day?

1 answer:

denis-greek [22]3 years ago

7 0

Answer:

in 7 days level of water changed in lake= -28

the water level change each day= -28/7= -4cm

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

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Answer:

The equation of the circle can be written as:

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Step-by-step explanation:

The general equation of a circle with center $(h,k)$ and radius $r$ is:

$\left(x-h\right)^2+\left(y-k\right)^2=r^2$

In our example, we know $\left(h,k\right)=\left(4,4\right)$ , as we just have to make sure we need determine $\:r^2$ .

$\left(x-4\right)^2+\left(y-4\right)^2=r^2\:\:$

As the circle passes through (10, 14), that pair of values for x and y must satisfy the equation. So we have:

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$\mathrm{Switch\:sides}$

$r^2=\left(10-4\right)^2+\left(14-4\right)^2$

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$\left(x-4\right)^2+\left(y-4\right)^2=136$

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