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mariarad [96]
3 years ago
12

A circle is described by the equation (x−1/2)squared+(y−3/2)squared=4/9. What are the coordinates for the center of the circle a

nd the length of the radius? (-1/2,-3/2), 2/3 units (-1/2,-3/2), 4/9 units (1/2,3/2), 4/9 units (1/2,3/2), 2/3 units
Mathematics
1 answer:
olasank [31]3 years ago
8 0
(x-1/2)² + (y-3/2)² = 4/9

For any circle in the standard form (x-h)² + (y-k)² = r², the center is at (h, k) and the radius is r.

In the case of our equation here. the center is at (1/2, 3/2) with a radius of 2/3.
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Use a calculator to find the r-value of these data. Round the value three decimal places.​
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Answer:

Option C. r=-0.901

Step-by-step explanation:

we know that

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3 years ago
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How do I solve this????
Arlecino [84]
Let's say the numbers are "a" and "b"
hmm say "a" is the smaller, and "b" the greater

so "b" is "4 more than 5 times" "a"

so... 5 times "a" is 5*a or 5a
4 more than "that", will be "that" + 4
or
5a + 4

so.. whatever "a" is, "b" is 5a+4

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so       \bf \begin{cases}
a+b=22\\
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\boxed{b}=5a+4\qquad thus\\
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a+\boxed{5a+4}=22
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solve for "a", to see what the smaller one is

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3 0
3 years ago
Evaluate the function.<br> f(x) = -2x2 + 7<br> Find f(-5)
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6 0
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pentagon [3]

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Make sure to bring down the < sign.

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When we do that we get <em>x < 4</em>

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4 years ago
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