Answer:
Step-by-step explanation:
<u>∴ ΔABC ≈ ΔADE</u>
∴
↑1 ↑ 2 ↑3
→
hope it helps..
have a great day!!
Answer:
sn = d/2·n^2 + (a - d/2)·n
sn = (-4)/2·n^2 + (19 - (-4)/2)·n = -441
- 2·n^2 + 21·n = -441
- 2·n^2 + 21·n + 441 = 0
n^2 - 21/2·n - 441/2 = 0
use pq-Formula
n = -10.5 ∨ n = 21
only n = 21 makes sense. So n = 21 is the correct answer.
Answer:
x=7
y=49
Step-by-step explanation:
-6x-7 = -7x because they both equal to y. -7 = -x, so x = 7. Plug into one of the equations and find y. y = -7(7). y = -49
Answer:
8x^2+14x^2+11x+2/4x+1
22x^2+11x+2/4x+1 ( It's 22x^2 cause 14x^2+*x^2 is 22x^2 and they are like terms.)
22x^2+11x+2/4x+1 ( The answer stays same cause there is no like terms so we can divide them)
What you have to do is to write your equation in the following form: (x-h)^2 + (y-k)^2 = r^2 , this is the equation that represent the circle.where (h,k) represents the center and r radius.
This is just an example to solve the center and radius of a circle.
To complete the squares, here is how to do it:
x^2 + 2*4*x + 4^2 +y^2-2*3*y+3^2 - 4^2-3^2 = 0 x^2 + 8x + 16 +y^2-6y+9 - 25 = 0 (x-4)^2 +(y-3)^2 = 25
Now h = -4 k = 3 and r = 5 . Center is (-4,3) and radius r = 5.
But then you are are looking for the equation that represent the circle describe. The answer is C. (x – 4)2 + (y – 3)2 = 2²