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2 years ago

9

The equation x2 + y2 − 2x + 2y − 1 = 0 is the general form of the equation of a circle. What is the standard form of the equatio

n?

1 answer:

8_murik_8 [283]2 years ago

5 0

(x – h)^2<span> + (y – k)^</span>2<span> = r^2</span><span>, this is the standard form of circle if you asking in that way..</span>

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Suppose that you are holding your toy submarine under the water. You release it and it begins to ascend. The graph models the de

Likurg_2 [28]

Answer:

Domain : 0 ≤ t ≤ 3

Range : -4 ≤ d ≤ 0

Step-by-step explanation:

The graph attached models the depth of submarine as a function of time.

Points on x-axis represent the time and points on y-axis represent increase in height of the submarine.

Domain of a function is represented by the points on x-axis.

Therefore, Domain : 0 ≤ t ≤ 3

Range of function is represented by te points on y-axis.

Therefore, Range : -4 ≤ d ≤ 0

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2 years ago

Find the slope of the graph. Write it as a

Verdich [7]

Answer:

2/3

Step-by-step explanation:

use rise over run. you may pick two y values and 2 x values and say (y2-y1)/(x2-x1). here I used (3-1)/(3-0)

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2 years ago

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Ilia_Sergeevich [38]

Answer:

Asnwer is A

Step-by-step explanation:

since the correlation between the FFQ and DR is 0.89

x y xy $x^{2}$ $y^{2}$

8.26 1.68 13.8768 68. 2276 2.8224

0.83 0 0 06889 0

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-----------------------------------------------------------------------------------------------------------

∑ $x_{i}$ = ∑ $y_{i}$ = ∑ $x_{i} y_{i}$ = ∑ $x_{i}^{2} y_{i}^{2}$ = ∑ $y_{i} ^{2}$ =

71.98 62.17 1061.479 1166.8046 1079.8017

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Correlation Coefficient or Pearson Correlation is given by:

the rest calculation is in the attached image

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3 years ago

If the ratio of y to x is equal to 3 and the sum of y and x is 80, what is value of y

Rus_ich [418]

Answer:

y = 60

Step-by-step explanation:

<h3>Step 1: Make sense of the given</h3>

"The ratio of y to x is 3"

This means that, $y\div x=3$

"The sum of y and x is 80"

This means, $x+y=80$

<h3>Step 2: Make use of the facts</h3>

If $y\div x=3$ , then $y = (3*x)$ .

We can plug this into the other equation by substitution:

$x + (3 * x)=80$

This simplifies to:

$4x = 80$

Which we can solve out and get:
$x=20$ .

<h3>Step 3: Plug and Chug</h3>

We solved for x, but we need the value of y.

So, we go back to the equation we first derived: " $y = (3*x)$ ".

And now we substitute the value of x, into this.

$y = (3 * (20))$

By solving this out, we get:
$y=60$

So, the value of y is 60.

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1 year ago

Rewrite the following equations in the form y=mx + b and identify the values of m and b

arlik [135]

You need to put the equations?

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2 years ago