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polet [3.4K]
3 years ago
14

Find the area of a circle with radius of 7

Mathematics
1 answer:
zubka84 [21]3 years ago
4 0

Answer:

-The area of a circle:

A \approx 153.938

     or

A \approx 153.94 (Rounded to nearest hundredth if needed)

Step-by-step explanation:

-Use the formula to find the area of a circle:

A = \pi r^2

-After you have the formula set up, use the radius for the formula:

A = \pi 7^2

-Then, you solve the formula:

A =  \pi \times 7^2

A = \pi \times 49

A = 49\pi \approx 153.938

-Round up to the nearest hundredth (if needed):

A \approx 153.94

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What is the median of the data displayed in this box-and-whisker plot?
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Answer:

106.25

Step-by-step explanation:

99.5+113= 212.5 /2 = 106.25

7 0
3 years ago
Find an equation of the line, in point-slope form, that passes through (-2,3) with a slope of -4
Nostrana [21]

Step-by-step explanation:

let the eqn be y - y1 = m (x - x1)

sub (-2, 3) and m = -4:

y - (-2) = -4 (x - (-2))

y + 2 = -4 (x + 2)

Topic: Coordinate Geometry

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3 years ago
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The equation x^2+y^2-4x+2y=b describes a circle. Determine the y-coordinate of the center of the circle.
irga5000 [103]
X² + y² - 4 x + 2 y = b
x² - 4 x + 4 + y² + 2 y + 1 = b + 4 + 1
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b + 5 = r
b + 5 = 7
b = 7 - 5
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3 0
3 years ago
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if the sum of 2\3 and four time a number is equal to 5/6 subtracted from five times the number. find the answer
Alex17521 [72]

We conclude that the solution to the linear equation is x = 1/24.

<h3>How to find the number?</h3>

Let's define x as the number.

Now we want to write:

"the sum of 2/3 and for times a number...."

That can be written with the equation:

2/3 + 4*x

And we also know that:

"the sum of 2/3 and for times a number is equal to 5/6"

Then we can complete the linear equation:

2/3 + 4*x = 5/6

Now we need to solve it for x:

2/3 + 4x = 5/6

4x = 5/6 - 2/3

4x = 5/6 - 4/6

4x = 1/6

x = (1/4)*(1/6) = 1/24

x = 1/24

We conclude that the solution to the linear equation is x = 1/24.

If you want to learn more about linear equations:

brainly.com/question/1884491

#SPJ1

8 0
2 years ago
Vertical angles must check all that apply
eimsori [14]

Answer:

Vertical angles must have the same vertex and be congruent as well.

Step-by-step explanation:

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