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REY [17]
3 years ago
6

Identify the center and radius of the circle whose equation is (x+2)^2+(y-3)^2=49.

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
8 0
The center is (0,0).
The radius is 7.
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If a=x+y and b=x-y ,show that (a-b)^2=4y^2​
NemiM [27]

Step-by-step explanation:

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Please help me solve this
grigory [225]

Answer:

The length of river D is 2550

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2 years ago
Which of the following are incorrect expressions for slope?
vfiekz [6]

Answer:

Option B and C are correct.

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise} are the expression incorrect for slope

Step-by-step explanation:

Slope is defined as the change in the dependent variable  relative to the change in the dependent variable

or the ratio of the horizontal changes to vertical changes between any two points on the graph of the line.

The vertical changes between any two points is rise

The horizontal changes between any two points is run.

Formula for slope is given by:

For any two points (x_1, y_1) and (x_2, y_2)

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\text{Slope} =\frac{rise}{run}= \frac{y_2-y_1}{x_2-x_1}

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Δx = x_2-x_1

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Therefore, the expression which are incorrect for slope  are;

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise}

8 0
3 years ago
Read 2 more answers
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