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Brrunno [24]
3 years ago
8

7. Change the fraction 13/20 to a decimal.

Mathematics
2 answers:
Contact [7]3 years ago
5 0

Answer:

divide it using a calculator

Nady [450]3 years ago
3 0

Answer:

Step-by-step explanation:

0.65 is your answer

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Is a reflection of (-7,2) across the y-axis is at (7,-2)
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The reflection of (-7, 2) across the y-axis is (-7, -2) (hope this helps ;3)
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Convert this ratio to a fraction that is simplified. <br><br> 2 1/3: 4 1/2
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2 1/3=7/3=14/6
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Determine the center and radius of the following circle equation:<br> x^2 + y^2 + 12x + 16y + 19 = 0
Oksanka [162]

Answer:

radius: 9

center: (-6, -8)

Step-by-step explanation:

First, you may wan to rearrange the equation so it is easier to sole, like:

x^2 + 12x + y^2 + 16y + 19 =0

Next, we need to complete the square. x^2 + 12x is the start of the square of x + 6, which ends in 36, and y^2 + 16y is the start of the square of x + 8, which ends in 64. We can start to write in the squares like:

x^2 + 12x + 36 - 36 + y^2 + 16y + 64 - 64 + 19 = 0

(36 & 64 are subtracted so the equation stays the same)

You can factor getting:

(x + 6)^2 - 36 + (y + 8)^2 - 64 + 19 = 0

You can combine the constants to get -36 - 64 + 19 = -81 and we can add 81 to both sides to get:

(x + 6)^2 + (y + 8)^2 = 81

The standard form of a circle equation is:

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

where (h, k) is the center and r is the radius.

In this case, by substituting, we get the center is (-6, -8) and the radius is 9.

6 0
2 years ago
How do u write 0.47 repeating as a fraction
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46/100 I hope this helps!
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3 years ago
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