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2 years ago

What is the rational number of 56.7

Mathematics

1 answer:

kykrilka [37]2 years ago

8 0

Answer:

$56.7=56+\frac{7}{10}=\frac{567}{10}$

Step-by-step explanation:

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3 years ago

160% of what number is 50 Provide an exact fraction answer

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3 years ago

Find the radius of the circle with equation x²+y²+8x+8y+28=0

galina1969 [7]

<h2>Hello!</h2>

The answer is:

Center: (-4,-4)

Radius: 2 units.

To solve the problem, using the given formula of a circle, we need to find its standard equation form which is equal to:

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

Where:

"h" and "k" are the coordinates of the center of the circle and "r" is its radius.

So, we need to complete the square for both variable "x" and "y".

The given equation is:

$x^{2}+y^{2}+8x+8y+28=0$

So, solving we have:

$x^{2}+y^{2}+8x+8y=-28$

$(x^2+8x+(\frac{8}{2})^{2})+(y^2+8y+(\frac{8}{2})^{2})=-28+((\frac{8}{2})^{2})++(\frac{8}{2})^{2})\\\\(x^2+8x+16 )+(y^2+8y+16)=-28+16+16\\\\(x^2+4)+(y^2+4)=4$

$(x^2-(-4))+(y^2-(-4))=4$

Now, we have that:

$h=-4\\k=-4\\r=\sqrt{4}=2$

So,

Center: (-4,-4)

Radius: 2 units.

Have a nice day!

Note: I have attached a picture for better understanding.

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3 years ago

Which of these numbers is prime? large 11, 15, 21, 27, 56

gizmo_the_mogwai [7]

11 is the only prime number. It's only multiples are 1 and itself

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3 years ago

Read 2 more answers

On a venn diagram shade the region<br>a'n(bnc)

svlad2 [7]

Answer:

See the three attached images.

Step-by-step explanation:

image1 shows the intersection of b and c: $b \cap c$ . (green "football")

image2 shows the <u>complement</u> of a (outside a): $a'$ (yellow)

image3 shows the intersection of those sets: $a'\cap (b\cap c)$ (green "football with a bite out of it") :-)

3 0

3 years ago

What is the rational number of 56.7​

What is the rational number of 56.7