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3 years ago

What type of problem is this

Mathematics

1 answer:

MArishka [77]3 years ago

7 0

An inequality I believe so:
p should be larger than 7.0 but less than 7.8 for a normal pH balance.
Only one answer is between 7.0 and 7.8 therefore 7.3 is the answer.

Hope this helps!

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Find the center and the radius of the circle with the equation .

Simora [160]

We have been given an equation of circle $x^2+2x+y^2-2y-14=0$ . We are asked to find the center and radius of the circle.

First of all, we will write equation of circle is standard form $(x-h)^2+(y-k)^2=r^2$ , where center of circle is at point (h,k) and radius is r.

Let us complete the square for both x and y.

$x^2+2x+y^2-2y-14+14=0+14$

$x^2+2x+y^2-2y=14$

Adding half the square of coefficient of x and y term, we will get:

$(\frac{2}{2})^2=1^2=1$

$(\frac{-2}{2})^2=(-1)^2=1$

$x^2+2x+1+y^2-2y+1=14+1+1$

$(x+1)^2+(y-1)^2=16$

$(x-(-1))^2+(y-1)^2=4^2$

Therefore, the center of the circle is $(-1,1)$ and radius is 4 units.

4 0

3 years ago

The opposite inverse of -1/9 is

melomori [17]

Answer:

1/-9

Step-by-step explanation:

hope it helps... ✌️✌️✌️✌️

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7 0

3 years ago

Does the equation −2x + y = 0 represent a direct variation? If so, identify the constant of variation.

Vikentia [17]

Adding 2x to both sides we get

y = 2x

This is direct variation where the constant is 2.

3 0

3 years ago

Help!!!! I need it ASAP!! I am confused. Am I on the right track

melisa1 [442]

Answer:

x = 7

y = 0

Step-by-step explanation:

Close, but not quite.

8 0

3 years ago

I don’t understand i need help please

worty [1.4K]

Answer:

Step-by-step explanation:

You need to make a shape that is the same shape and size to the triangle on the page.

7 0

3 years ago