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Mumz [18]
3 years ago
7

6th question of the day WHat is the equation for standard equation of circle?

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
4 0

Answer:

Where (h,k) is the center and r is the radius

Step-by-step explanation:

r^2 = (x-h)^2+ (y-k)^2

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Which is the best estimate for 19% of 205? <br><br>• A. 40<br>• B. 50<br>• C. 100<br>• D. 400 ​
adelina 88 [10]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
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I just need to know if these are parallel please,,,
Nataly_w [17]
These are parallel !
4 0
3 years ago
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The depth of a lake in Lexington changes over time due to rainfall and evaporation. A few months ago, the depth was 1,300 feet.
SVETLANKA909090 [29]

Answer:

The Depth of the lake had increased by 19%.

Step-by-step explanation:

Given:

Depth of lake few months ago = 1300 ft

depth of lake currently = 1547 ft

We need to find the percent of increase in depth of lake.

Solution:

First we will find the increase in depth of lake.

Increase in depth of lake can be calculated by subtracting Depth of lake few months ago from depth of lake currently.

framing in equation form we get;

increase in depth of lake = 1547-1300= 247\ ft

Now to find the percent of increase in depth of lake we will divide  increase in depth of lake from Depth of lake few months ago and then multiply by 100.

framing in equation form we get;

percent of increase in depth of lake = \frac{247}{1300}\times 100 =  19\%

Hence the Depth of the lake had increased by 19%.

6 0
3 years ago
4/6 written as a ratio is <br>​
earnstyle [38]

Answer:

4:6

Step-by-step explanation:

Ratios and fractions can be written interchangably

6 0
3 years ago
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Which of the choices below is not a possible correlation coefficient?
fiasKO [112]

Answer:

The condition for r is the following:

-1 \leq r \leq 1

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

Step-by-step explanation:

The correlation coefficient is a measure of dispersion and is a value between -1 and 1, and is defined as:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}

The condition for r is the following:

-1 \leq r \leq 1

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

8 0
3 years ago
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