21. Given the equation of the circle (x + 3)² + (y-2)² = 16, what is the center and radius of the circle? A (3.2):r = 4 B. (-3,- 2); r = 8 C. (-3,2); r = 4 D. (3.-2): r=8
2 answers:
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Answer: Letter C (-3,2); r=4 Instructions: 1) You see that the equation is in the correct form. So, now you need to compare this (x-h)^2 + (y-k)^2=r^2 (x+3)^2+ (y-2)^2=r^16 2) You see that the symbols change in both equations, so - • + = - X=-3 3) - • - = + Y=2 4) that is why the center is (-3,2) 5) Now, you need to make a square root of 16 Which is 4 (the number which if you multiply two times ^2, will be 16)
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Based on the given parameters about old cone, the height of the new cone is 12 inches
<h3>Equivalent ratio</h3>
Old cone:
Radius, r = 2 inches Height, h = 6 inches
New cone:
Radius, r = 4 inches Height, h = h
equate ratio of radius to height in old and new cone
2 : 6 = 4 : h
2/6 = 4/h
cross product
2 × h = 6 × 4
2h = 24
h = 24/2
h = 12 inches
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Answer:
yes
Step-by-step explanation:
Answer:
x ≤ 31/3
Step-by-step explanation:
2.A 3.C Hope this helped!!!
Answer:
I think that would be 1
Step-by-step explanation:
Do everything in the lines before anything else. -2 becomes a 2 and then you add that with the 12 and divide 12 on both sides to get one.