Answer:
center:(0,4) radius:6
Step-by-step explanation:
Answer:
D. 21.
Step-by-step explanation:
The general form of the equation of a circle is:
(x - a)^2 + (y - b)^2 = r^2 where r is the radius.
Comparing:
(x + 5)^2 + (y + 7)^2 = 21^2
So r^2 = 21^2
making r = √21^2
= 21.
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Yes, that is correct because if you want to reduce it you divide 8 by 2 and 10 by 2 and you get 4/5
Answer:
She will owe him 60$
Step-by-step explanation:
Because the second ticket will be half off half of 120 is 60.
Answer:
40°
Step-by-step explanation:
Every triangle adds up to 180°
So to get the angle of the triangle we already have two values of:

Then since it's at a 90° angle we can subtract 50 to get:
40° as the other part of the right angle.
And applying the 180 rule again:
