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2 years ago

Drag and drop the symbol that correctly represents this graph.

Mathematics

2 answers:

lisov135 [29]2 years ago

6 0

A closed dot mean "greater than or equal to" or "less than or equal to"

An open dot means "less than" or "greater than"

In this case, an open dot would mean

X>-2

Lapatulllka [165]2 years ago

5 0

.........................

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What is the equation of a circle with center of (4,2) passing through the point (7,2)

attashe74 [19]

Answer:

(x-4)^2 + (y-2)^2 = 3^2

(x-4)^2 + (y-2)^2 = 9 (simplified if needed)

Step-by-step explanation:

-Equation of a circle is:

$(x-h)^2+(y-k)^2=r^2$ where the center is (h, k) and the radius is $r^2$ .

-Place the center and the point onto that equation:

$(7-4)^2+(2-2)^2=r^2$

-Then, you solve:

$(7-4)^2+(2-2)^2=r^2$

$(3)^2+(0)^2=r^2$

$9 +0=r^2$

$9=r^2$

$\sqrt{9} =\sqrt{r^2}$

$3=r$

-So, the result is:

$(x-4)^2+(y-2)^2=3^2$

$(x-4)^2+(y-2)^2=9$ (simplified if needed)

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3 years ago

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fiasKO [112]

Kind of the whole point of an infinite geometric series is that you can't find the sum. If it is infinite, then the sum is infinite.

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