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3 years ago

A circle has an area of 2827.4333. What is the radius? (round to the nearest whole number)

Mathematics

2 answers:

Ghella [55]3 years ago

5 0

The answer is 29.9999The nearest whole number is 30.

Ray Of Light [21]3 years ago

5 0

Answer:

the radius equals 30

______

_/2827.43

--------- = 30

3.14

it's the square root of the area (2827.43) divided by pie

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What is the equation for the linear model in the scatterplot obtained by choosing the two points closest to the line

Tom [10]

Answer:

y= -3.5x+57.5.

Step-by-step explanation:

4 0

3 years ago

What 2 numbers multiply to be -14 and add to be -3

Svetach [21]

Xy = -14
x + y = -3

$xy = -14$
$\frac{xy}{x} = \frac{-14}{x}$
$y = \frac{-14}{x}$

$x + y = -3$
$x + \frac{-14}{x} = -3$
$\frac{x^{2}}{x} + \frac{-14}{x} = -3$
$\frac{x^{2} - 14}{x} = -3$
$x^{2} - 14 = -3x$
$x^{2} + 3x - 14 = 0$
$x = \frac{-(3) \± \sqrt{(3)^{2} - 4(1)(-14)}}{2(1)}$
$x = \frac{-3 \± \sqrt{9 + 56}}{2}$
$x = \frac{-3 \± \sqrt{65}}{2}$
$x = \frac{-3 \± 8.06}{2}$
$x = -1.5 \± 4.03$
$x = -1.5 + 4.03$ $or$ $x = -1.5 - 4.03$
$x = 2.53$ $or$ $x = -5.53$

  x + y = -3
2.53 + y = -3
- 2.53 - 2.53
  y = -5.53
  (x, y) = (2.53, -5.53)

x + y = -3
  -5.53 + y = -3
+ 5.53   + 5.53
  y = 2.53
  (x, y) = (-5.53, 2.53)

The two numbers that multiply to -14 and add up to -3 are -5.53 and 2.53.

8 0

3 years ago

What is U over 72=2 over 4

Mademuasel [1]

U/72 = 2/4

means u/72 = 0.5

therefore u = 72*0.5

which equals 36

8 0

4 years ago

Read 2 more answers

Question 7

Sedbober [7]

Answer:

1.27