Simplify X+^2+8x+7/X^2-1

Mathematics

1 answer:

denis23 [38]2 years ago

3 0

Answer:try 43

Step-by-step explanation:

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Charlie has 32 cats, which is 8 times as many cats as Waylon. How many cats does Waylon have?

olya-2409 [2.1K]

You have to do 32 divided by 8

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2 years ago

Read 2 more answers

The diameter of a circle has length 12. The center is at*(-5, 2). Give the equation

labwork [276]

Answer:

Equation of the circle is : $x^{2} + 10x + y^{2} -4y -7 =0$

Step-by-step explanation:

Let us consider the image attached in the answer area.

The center O has the co-ordinates i.e. (-5,2) and the diameter given is 12 units.

We know that radius is half of diameter.

$\text{Radius = }\dfrac{\text{Diameter}}{2}$

$\text{Radius = }\dfrac{12}{2}\\\Rightarrow \text{Radius = 6units}$

The equation for circle given the center and radius, can be represented as:

$(x-a)^{2}+ (y-b)^{2} = r^{2}$

Where (a,b) is the co-ordinate of center and r is the radius.

Let us consider the following formula:

$(p+q)^2 = p^{2}+ q^{2} +2pq\\(p-q)^2 = p^{2}+ q^{2} -2pq$

$(x-(-5))^{2}+ (y-2)^{2} = 6^{2}\\\Rightarrow (x+5)^{2}+ (y-2)^{2} = 36\\\Rightarrow x^{2} + 25 + 10x +y^{2} + 4-4y=36\\\Rightarrow x^{2} + 10x +y^{2} -4y-7=0$

Hence, Equation of the circle is : $x^{2} + 10x + y^{2} -4y -7 =0$

4 0

2 years ago

A nunber greater than 0 is called

kirza4 [7]

Hey there!

Negatives numbers are less than $0$ and positive numbers are greater than $0$

Just think of it on a number line, the numbers on the left of $0$ is negative numbers and the numbers to the right of $0$ is positive numbers

Answer: $Positive$ $numbers$

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