Hello :
h= 3 and k = -2 r= 12
<span>The standard equation of a circle is : (x-3)² +(y+2)² = 144</span>
Answer: 21 Posters
Step-by-step explanation: Okay to find the solution you multiple 36 by 2 and 16 by 2. You get 72 and 32. You add these two numbers together and get 104 tacks. You then do 104/4, (104 divided by 4) and you get 21 posters. I hope this helped! :P
9514 1404 393
Answer:
Step-by-step explanation:
Let 'a' and 'e' represent Alvin's and Elga's ages, respectively.
a = e-12 . . . . . Alvin is 12 years younger
a + e = 86 . . . the sum of their ages is 86
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Substituting for 'a' gives ...
(e -12) +e = 86
2e = 98
e = 49
a = 49 -12 = 37
Alvin is 37; Elga is 49.
