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2 years ago

Which is the closest approximation to the area of the circle?

Mathematics

2 answers:

Bad White [126]2 years ago

4 0

area of square = pi r^2 3.14 * 13 *13 =530.66 =531 A

goldenfox [79]2 years ago

3 0

The Answer is D 41
I did the math on paper and got it as 40.87 which is rounded to 41

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The length of a rectangle is (x + 2). The

Oksanka [162]

Answer:

Step-by-step explanation:

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3 years ago

For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a

Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

$k = \pm10$

$k = - 10 \: or \: k = 10$

3 0

2 years ago

46 degrees and x X =

vesna_86 [32]

Answer:

136° that's 90 plus 46.........

3 0

2 years ago

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Alchen [17]

The answer to your question is obviously bdjanabjmamajdhf jsjsju hshs2+2is4-thats3quickmafsna. duh....

6 0

2 years ago

Find the inequality represented by the graph.

Simora [160]

Answer:

y < $\frac{3}{4}$ x

Step-by-step explanation:

Since the line is dotted and shaded down that mean the sign is <.

The slope is rise over run or 3/4.

Since the line intercepts the y-intercept at (0,0) that means that the y-int is 0

So the full equation is y < 3/4 x

5 0

3 years ago