6/(4 - 13i) = 6/(4 - 13i) * (4 + 13i)/(4 + 13i) = (24 + 78i)/(16 + 169) = 6/185 (4 + 13i)
Answer: <em>D. 120 students</em>
Step-by-step explanation:
<em>This is an easy solution</em>
<em>Take 300 and divide it by 5</em>
<em>300/5</em>
<em>This will result in 40</em>
<em>Now Multiply 40 by 3</em>
<em>Like so: 40x3</em>
<em>This will result in </em><em>120</em>
Answer:
Expression Chang:
N+6
If N = 60
Then 60+6=66
Chang is 66 inches
Step-by-step explanation:
we can see that the center is (-3, 3) and the radius is 9 units.
<h3 /><h3>
How to find the center and radius of the circle?</h3>
The general circle equation, for a circle with a center (a, b) and radius R is given by:
(x - a)^2 + (y - b)^2 = R^2
Here we have the equation:
x^2 + y^2 + 6x = 6y + 63
Let's complete squares:
x^2 + y^2 + 6x - 6y = 63
(x^2 + 6x) + (y^2 - 6y) = 63
(x^2 + 2*3x) + (y^2 - 2*3y) = 63
Now we can add and subtract 9, (two times) so we get:
(x^2 + 2*3x + 9) - 9 + (x^2 - 2*3x + 9) - 9 = 63
(x + 3)^2 + (y - 3)^2 = 63 + 9 + 9 = 81 = 9^2
(x + 3)^2 + (y - 3)^2 = 9^2
Comparing with the general circle equation, we can see that the center is (-3, 3) and the radius is 9 units.
If you want to learn more about circles:
brainly.com/question/1559324
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Answer:
part A is 120
Step-by-step explanation:
6 × 20 = 120
part B
