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3 years ago

What is the equation of a circle with center (2,-5) and radius 4?

Mathematics

2 answers:

azamat3 years ago

4 0

Answer:

(x - 2)² + (y + k)² = 4²

Step-by-step explanation:

To answer this, we insert the given into (center x-coordinate 2, center y-coordinate -5, radius 4) into the general formula for a circle with center at (h, k) and radius r: (x - h)² + (y - k)² = r² → (x - 2)² + (y + k)² = 4²

Marrrta [24]3 years ago

3 0

The GENERAL equation for EVERY circle with its center at (A, B) and a radius of R is

(x - A)² + (y - B)² = R² .

So if you just stuff in the numbers given in this question, the equation of THIS circle is

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Given f(x) = 10 - 16/x, find all c in the interval [2,8] that satisfy the mean value theorem

Katen [24]

F(x)=10-16/x
f'(x)=16/x^2
f'(c)=16/c^2
f(8)=10-16/8=10-2=8
f(2)=10-16/2=10-8=2
$f'(c)= \frac{f(b)-f(a)}{b-a} in (2,8),
 \frac{16}{c^2} = \frac{f(8)-f(2)}{8-2} ,
 \frac{16}{c^2} = \frac{8-2}{8-2}
$
4∈[2,8] is the required point.

8 0

4 years ago

Read 2 more answers

The average blink last one-tenth of a second. If you blink 14,000 times per day, for how many seconds are your eyes closed while

Katen [24]

Answer:

14?

Step-by-step explanation:

8 0

3 years ago

Can someone explain scatter plots

allochka39001 [22]

Answer:

a type of plot or mathematical diagram using coordinates to display values for typically two variables for a set of data

Step-by-step explanation:

In a scatter plot has is a line of best fit which shows the closest values to the many on the plot.

8 0

3 years ago

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A circle with radius of 2cm sits inside a circle with radius of

Semmy [17]

Answer:

37.70 cm^2

Step-by-step explanation:

area of circle with radius 4 cm = (pi)r^2 = 3.14159 * (4 cm)^2 = 50.27 cm^2

area of circle with radius 2 cm = (pi)r^2 = 3.14159 * (2 cm)^2 = 12.57 cm^2

difference in areas = 37.70 cm^2

6 0

3 years ago

In a study of pain relievers, 50 people were given product A, and all but 11 experienced relief. In the same study, 100 people w

Nataly_w [17]

Answer:

Product B performed worse in the study because 86% failed to get relief with this product, whereas only 78% failed to get relief with Product A

Step-by-step explanation:

We are given the following in the question:

Product A:

Number of people,

$n_1 = 50$

Number of people who received relief,

$x_1 = 11$

Proportion of people who received relief from product A =

$p_A = \dfrac{x_1}{n_1} = \dfrac{11}{50} = 0.22 = 22\%$

Proportion of people who did not received relief from product A =

$1 = p_A = 1 - 0.22 = 0.78 =78\%$

Product B:

Number of people,

$n_2 = 100$

Number of people who received relief,

$x_2 = 14$

Proportion of people who received relief from product B =

$p_B = \dfrac{x_2}{n_2} = \dfrac{14}{100} = 0.14 =14\%$

Proportion of people who did not received relief from product B =

$1 = p_B = 1 - 0.14 = 0.86=86\%$

Product B performed worse in the study because 86% failed to get relief with this product, whereas only 78% failed to get relief with Product A

3 0

4 years ago